TL;DR

The Wendougee DATA S is a dual-boiler home espresso machine with a commercial-grade gear pump and full pressure/flow profiling through the E-Bar app. Built from premium European parts, it offers serious control and strong steam, though its advanced features suit experienced baristas over beginners. 

Wendougee DATA S (summary 1 min read)

In my opinion, the Wendougee DATA S is one of the most capable prosumer dual-boiler espresso machines on the market. However, I don't think it is designed for beginners. Its strength lies in its ability to control both pressure and flow, and to repeat the same profile consistently.

Some of the highlights of the Wendougee DATA S include the gear pump, which profiles pressure and flow from 0.1–12 bar in 0.1-bar increments using the E-Bar app (iOS/Android). It also connects to the Wendougee ecosystem, which allows you to connect to a scale for grinding by weight, connect to Wendougee grinders and save grind sizes for each profile, and use the sync function to set the shot time; the grinder will then adjust automatically. This feature is currently only available on the ARES and RKONE models (coming to MILO soon). The machine also has 316L stainless steel boilers (1.8 L steam boiler and a 0.8 L brew boiler in a saturated group head design with a standard 58 mm portafilter size) and high-quality, Genuine commercial-grade components from European brands, such as a WIKA pressure sensor and pressure gauge from Germany, an Italian GICAR flow meter and ODE solenoid valves from Italy.

One drawback is that you only get a wooden paddle with which to start and stop the pre-programmed profile, More control and the settings and profile programming require the E-Bar app, the app still improving but it does experience some glitches. If you are a beginner or on a budget then in my opinion, you could start your espresso journey with something like Wendougee LITA or WPM Primus or even Fellow Espresso Series 1.

On this page (15 min read)

Aside view of the Wendougee DATA S an high end luxurious Espresso machine in black with wooden handle that make it feel Luxurious and expensive and grabs all the attention coming from black background. | vellutto.eu

What is Wendougee DATA S?

The Wendougee DATA S is a dual-boiler home espresso machine that offers full pressure and flow profiling, a La Marzocco-style saturated brew group, and a commercial-grade gear pump. The sale price for the DATA S in Europe is around €3,695-3950.

I've sold and used a lot of espresso gear, and the Wendougee DATA S espresso machine is the one that ended up on my own counter and stayed there. So this isn't me reading a spec sheet back to you. It's what I actually think after living with it every day for close to a year.

Let me talking a bit about Wendougee. It started in 2014 as a specialty coffee shop in China, grew into a small chain, and then started building its own equipment. The brand is newer than some of the Italian names you might know, and yes, it's made in China, which makes some people lose interest even before they've actually looked at the products offered by Wendougee.

The Wendougee DATA S caught my attention when I saw that no corners were cut. The parts inside the machine are sourced from the same European factories used by major brands. The chassis is robustly constructed and the engineering is meticulous in areas that most machines neglect. This is a manufacturer conducting real R&D.

When I opened it up, the DATA S it looked and Felt like a commercial machine.

I was pleasantly surprised when I checked the inside of the machine, the flow meter comes from GICAR which is a well-known Italian manufacturer. The pressure sensor and the steam pressure gauge are provided by WIKA, which is a German brand. The solenoid valves also come from an Italian company ODE, which also supplies La Marzocco. The commercial-grade gear pump used in the machine is created by the Wendougee itself. and I could see that the company does not compromise on the quality of the parts used in this machine. The boilers used in the Wendougee DATA are made from 316L stainless steel, It is considered surgical-grade due to its anticorrosive properties, and La Marzocco uses it in its machines as well.

There are few details that I appreciate more than I expected to. For instance, the hot water runs through the copper pipes instead of plastic or PTFE tubing. Personally, I would have preferred stainless steel, but copper is still a great choice. Another thing that I think makes the Wendougee DATA S espresso machine extremely thermally stable is its similarity to the Linea Mini and La Marzocco GS3. The cold water gets preheated by running through a pipe inside the steam boiler before it reaches the saturated brew boiler. This process helps to keep the brew boiler thermally stable, preventing thermal shock when cold water enters the boiler.

I do like that Wendougee designed the machine in a way that each part is easy to access. The maintenance or repair of the machine is quite simple. You can even drain the steam boiler from underneath, which might not sound exciting, but anyone who's owned an espresso machine for some time will appreciate that is when it's time for descaling or routine maintenance.

I like that it heats up quickly. I have the 2800W model and it's ready to brew in under 10 minutes. By that, I mean that the steam is ready and the brew boiler has reached the target temperature. However, I usually wait 15 minutes for the portafilter to heat up properly.

The steam performance of Wendougee DATA S was quite the surprise to me. the machine delivers proper commercial-level steam performance. The steam boiler is insulated which helps it maintain the temperature and save on energy. and the pressure can go up to 2.5 Bar on 140 degrees Celsius, I don't believe anyone needs this much pressure, but it's nice to have the option.

The group head structure is similar to La Marzocco's, using the same shower screen layout that allows for plenty of experimentation. I can swap in different shower screens such as Sworksdesign, IMS, and E&B, Pesado and see how each one changes the way water is distributed and how evenly the coffee puck is saturated.

the gear pump and mechanical needle valve restrict the maximum flow rate to 12 ml/s. This gives me another way to experiment with my extractions. Another thing I really appreciate about Wendougee is the support. Wendougee continues to release the firmware updates on regular basis that help the machine and the app gain new features and small fixes over time however, it is still far from perfect, but hopefully it will get there!

What is Wendougee E-Bar App?

The Wendougee E-Bar app is the application that helps in maintaining control over different features of Wendougee DATA S and other Wensougee products like MILO, ARES, LITA. It runs on both IOS and Android devices, and it connects over Bluetooth, and it's where you shape how the machine pulls your shot and manage your extraction. With the help of this app, you can design the pressure or flow curve or both (You can only do both when designing your profile, not when brewing manually), for the profile that you want the machine to follow during extraction. The Wendougee E-Bar app also allows you to save recipes, including the grind size and speed for each recipe when connected to MILO (soon it could add the grind by sync function). While also it can connect to the ARES through grind by sync so it keep the brewing time consistent while the grinder does adjustment automatically.

In simple terms, I create a profile, and the DATA S follows the profile every time. I can brew using a pressure Profile or flow-priority profile. I have full control over the shot, which is something I have grown to appreciate, also Pair it with a compatible scale like BooKoo and a grinder like MILO, and your entire setup works together seamlessly.

Note: Connecting a scale adds two extra lines to the graph i.e. Weight Volume (W.V.) in the cup and Total Weight (W.T.) Which provides me with extra insight into what is happening to the puck during extraction?

I found it quite tempting that the app offers flexibility and consistency. Once you have a profile Dialled in, the machine keeps on repeating it every time for that type of coffee. When I switch to a different recipe, I just select the saved profile instead of starting over or start with profile as a starting point and modify it as needed. There is also a community from which I can download other people's profiles. I can try their profiles; I usually use them as a starting point. In my opinion, the app's biggest advantage is the regular updates that add new features to the machine via firmware. I don't believe there's another product on the market that can do this besides the WPM Primus. A few other machines might accept firmware updates, but I'm not aware of them.

However, as for the date of publishing the Wendougee DATA S can't change the temperature during a shot, and you'll need a supported scale, like a BooKoo or Acaia(coming soon) for true brew-by-weight. however, you can do control the weight of the shot by setting the volume of water that go through the group head. And the app still has some glitches, but it has become much more stable with recent updates.

What does Wendougee DATA S espresso machine look like?

the Wendougee DATA S an high end luxurious Espresso machine in black with wooden handle that make it feel Luxurious and expensive and grabs all the attention coming from a dark black background. | vellutto.eu

When it comes to the look of the Wendougee DATA S I feel it nailed two important points to me, it is a modern sleek and stylish machine with elegant aesthetics without sacrificing the tactile and traditional look. The Wendougee DATA S really adds rich café vibes to place. I think the minimalist and modern design of this machine gives it a clean and polished look. One thing I've noticed is that even after owning this machine for more than a year, I still enjoy looking at it on the bar. However, given its size, I think this machine needs a dedicated coffee corner. I don't think its place is in the kitchen or a big kitchen.

Why Wendougee DATA S is called "The Mockingbird Machine"?

It was actually given this nickname by Marko from Bella Barista during one of his reviews. He referred to it as such because it can easily replicate any espresso profile from any other machine. So if you want to replicate the profiles from other espresso machines like Decent DE1, Profitec Pro 800, or La Marzocco Linea Mini in order to run them on DATA S, you can easily do it so.

Is Wendougee DATA S beginner friendly?

To keep it simple YES, but and this is a BIG but, I Don't believe it is the place to start your coffee journey. However, I do think, it is one of the best upgrades available in the market.

From my personal experience, I would say that DATA S is beginners friendly so my girlfriend has no problem using it and enjoy perfect cup of coffee. However, It also has many features that someone who is just starting to enjoy coffee as a hobby may not understand. Worse still, they may end up making bad coffee because they are not yet aware of all the variables that can affect an espresso shot.

As I have mentioned before, Wendougee DATA S is a variable pressure espresso machine due to which it does offers complete control over the way you brew your espresso. The features present in DATA S are quite advanced and exciting but they only prove useful once a person masters the basics of making a good espresso. If you are completely a novice then it's much better to focus on the basic steps such as: selecting the right freshly roasted coffee beans, puck prep, dialling the grinder, and mastering the brewing techniques before start playing with pressure profiling and flow control, even if it's tempting. This doesn't mean that the beginners cannot use DATA S. You can still load simple profile like flat 9 bar with simple pre-infusion and brew the coffee using that profile. Once you master the basics and improve your coffee brewing skills, you can start exploring other features and play with pressure and flow.

You must keep in mind that Wendougee DATA S espresso machine is the flagship model From Wendougee. If you're new to coffee or have a tight budget, you might not want to start with the DATA. Consider options like the WPM Primus, which gives you access to a gear pump at a low price, or the Wendougee LITA, which gives you access to the full Wendougee ecosystem with its dual vibratory pump setup.

What is the idea behind gear pump and is it important?

Most espresso machines use one of three types of pumps. The small vibration pumps found in most home machines move a piston back and forth dozens of times a second. They're cheap and compact, but they're also noisy and produce a pulsing flow. Step up to a prosumer or café machine, and you'll usually find a rotary pump. It's smooth and quiet, but it runs at a fixed speed, so you typically dial in 9 bar once, and that's your shot.

A gear pump works differently. Two meshing gears spin inside a close-fitting casing, trapping water between the teeth, carrying it around the edges, and pushing it out the other side. Each rotation moves a fixed amount of water, giving you a smooth, steady flow without the pulsing of a vibration pump. what this allows the machine to do. Because the amount of water moved depends on how fast the gears spin, the machine can adjust the pump speed on the fly to follow an exact pressure. On the Wendougee DATA S, this is controlled by a WIKA pressure sensor and a GICAR flow meter.

That's why you'll find gear pumps in serious Pressure profiling machines like the La Marzocco Strada EP, the WPM Primus, and the Rocket R Nine One. To be clear, a gear pump doesn't make better coffee by itself. What it gives you is much more control. What you do with that control is up to you.

So, is it important? It depends on what you want. If you enjoy a classic espresso at a steady 9 bar, a good rotary pump, or even a vibration pump, can make excellent coffee, and you don't need a gear pump at all. But if you want to shape the shot with a long, gentle pre-infusion, pressure ramps, or a declining pressure curve for a light roast, and repeat those results consistently, then a gear pump is the way to go. And I think that's exactly the kind of home barista the Wendougee DATA S is built for.

Wendougee DATA S commercial grade, Gear Pump with the precise pressure control from 0.1-12bar, and 0.1bar procession control level, that give Wendougee DATA S the ability to pressure profile and flow control vellutto.eu

How does pressure and flow profiling work on the DATA S?

For readers who do not know what pressure profiling and flow control is, let me explain. The word "profiling" refers to changing the pressure while the shot is running. This is not possible in all of the machines as certain espresso machines do not possess the profiling This feature maintains the same pressure or flow from start to finish. However, pressure profiling and flow profiling are different things: pressure profiling refers to changing the water pressure, whereas flow profiling means changing the flow rate of the water. Nevertheless, pressure and flow work together: pressure = flow x resistance.

As far as the Wendougee DATA S espresso machine is concerned, you can only choose one option a time. If you want to do pressure profiling, the flow will remain uncontrolled throughout the shot. If you want to do flow profiling, the pressure will be adjusted to try to achieve the flow you're aiming for through flow priority mode. It will not be possible for you to adjust both. However, it can do both pressure and flow profiling if you preprogram the profile and choose whether you want each stage to be pressure profiling or flow priority.

You can learn more about pressure profiling and flow control, as well as how they impact your espresso, by checking out this helpful guide.

The profiling is done on the machine according to a curve which consists of different stages and you can add amny stages as needed.

What is a needle valve? What does it do?

The needle valve is a component inside the Wendougee DATA S that controls the maximum quantity of the water that can flow through the group head during brewing process. The needle valve helps keep the water flow under control even if the app asks the machine to use more water. Although majority of the pressure profiling espresso machines allow the user to adjust only the pressure through an app or touchscreen, the DATA S is different as it uses a mechanical valve. This valve is located under a small opening on the top of the machine. If needed, it can be adjusted with a screwdriver. I believe it is a welcome addition and that more machines should offer this feature, unlike E61 group head machines. These machines use a fixed gicleur with a 0.6 mm or 0.8 mm hole to control the maximum flow.

Wendougee DATA S and LITA needle valve inside the machine

Is the DATA S good for light roasts?

In general, light-roasted beans are usually harder to extract than medium or dark roasts. If water flows through the espresso at high speed or under extreme pressure, it can become under-extracted due to channeling, or due to insufficient contact time with the water. This is where pressure profiling becomes a great option for experimentation, as it allows you to control the bloom phase. the water contact time, the puck saturation speed, the extraction time, and the water flow through the puck.

The Wendougee DATA S helps resolve this issue by offering you more control over the brewing process. For example, you can begin the brewing with a gentle pre-infusion in order to slowly soak the coffee grounds. Then you will gradually increase the pressure then end with ramp down. These features help bring out more sweetness and balance in the cup.

What is inside the DATA S machine? Is the quality of its parts any good?

I believe the Wendougee DATA S has an impressive exterior, but it also contains some of the highest-quality parts I saw on home espresso machine. It feels solid, well-built, and designed to last. With repair and maintenance in mind, it is designed to provide easy access to almost all the components.

the Wendougee DATA S robust build quality and the inside of the machine from both sides and a copper pipes and the boilers, and shows that extreme precision of engineering that went into design designing and building the machine vellutto.eu

The body is made of durable stainless steel, while the hot water travels through copper pipes and a stainless-steel water distribution block instead of plastic parts which is always welcome. The only plastic parts are used in areas where the water stays cool, The only plastic parts are used in areas where the water remains cool or not for consumption, such as the water tank, drip tray etc.

If we look inside, it becomes evident that the Wendougee DATA S uses many of the same components found in commercial espresso machines. Both boilers are 316L stainless steel boilers, 1.8L steam boiler and a 0.8L saturated group head, a German-made WIKA pressure sensor for accurate pressure readings, a WIKA pressure gauge, and an Italian GICAR flow meter to measure water flow precisely. It also includes high-quality Italian ODE solenoid valves. All of which help the machine perform consistently.

Wendougee DATA S Italian component a German-made WIKA pressure sensor for accurate pressure readings, a WIKA pressure gauge, and an Italian GICAR flow meter to measure water flow precisely. It also includes high-quality Italian ODE solenoid valves. All of which help the machine perform consistently.

Do I need the E-Bar App to use the DATA S?

Well that depends on your need. The DATA S gives you the option to program the front paddle to a specific profile, but for any other modifications, you will need to use the app.

So if you are talking about making espresso in the morning then you don't need the E-Bar app. As the brewing profiles can be loaded on the Wendougee DATA S machine, you can brew your espresso by using the uploaded profile to the paddle and the steam pressure can be monitored through the WIKA gauge that is located at the front of the machine. However, if you want to pressure profile realy time or build a profile, it cannot be done without the E-Bar app. As the machine doesn't possess a built-in display, the E-Bar app is the only place where you create and edit brewing profiles, adjust pressure and flow settings, save recipes for different coffee beans, and view live brewing graphs during extraction.

the E-Bar app isn't perfect yet. Some clients reported occasional bugs, and it can take a little time to get used to the layout. however, Wendougee regularly releases software updates, so the app continues to improve over time.

How does the DATA compare to the Decent DE1 and the LITA?

As far as the comparison between the Wendougee DATA, Wendougee LITA, and Decent DE1 is concerned, these three machines look similar in case of their functionality. However, they took an absolutely different approach when it comes to the technology to produce espresso. There not a shred of doubt that machines produce amazing espresso. However, in order to understand how these machines produce such highly quality espresso, we need take a look inside these machines. The Wendougee DATA S and Wendougee LITA use the exact same approach, which is the traditional boiler approach. It is more reliable, has a better lifespan, and the possibility of having something breaking on you is much less due to its simplicity. On the other hand, Decent DE1 took an absolutely different approach. Decent uses thermal blocks, which instantly heats the water until it brews or steams milk. However, Decent does provide a superior level of control in comparison to the Wendougee DATA S and Wendougee LITA, but that goes only when you are talking about the temperature profiling. Also, the Decent is limited to 8 ml/second of water flow however, the new Decent Bengle incrased it to 12 ml/second.

Both Decent and Wendougee machines give you the ability to pressure profile your shot and will give you an amount of control over your extraction and how you are basically experimenting with your coffee. One thing that Decent offer that the Wendougee does not is temperature profiling. In the Decent, you can increase and decrease the temperature of your shot, while on the Wendougee, that is not particularly an option yet. Another thing that the Wendougee offers and the Decent does not is that on the Wendougee, you can brew and steam milk at the same time, thanks to the dual boiler. The difference between the Wendougee DATA and the Wendougee LITA goes down to the boiler sizes and pump type.

The DATA S has far bigger boiler sizes due to which it can comfortably handle light commercial use. I think it can produce up to 100 cups a day without any problems. On the other hand, LITA is designed mostly for home use. The important thing is that, both DATA S and LITA give you extremely stable temperature with the exact same technology from the inside.

Also that Wendougee LITA utilizes dual vibratory pumps, while the DATA S utilizes a high-precision commercial-grade gear pump. In case of Decent, it contains two vibratory pumps. However, one of these pumps is for cold water and the other for hot water. It's not to smooth the frequency of the water disturbing the puck.

We are also always available to help you choose over the phone. Or you can chat with us on WhatsApp.

Full Specifications

Spec Wendougee DATA S
Price ( Vellutto) €3,695 sale / €3,895 regular
Type Semi-automatic, true dual boiler
Pump Proprietary self-priming gear pump, variable speed
Pressure 0–12 bar, 0.1-bar steps
Max flow 12 ml/sec, adjustable needle valve
Profiling Pressure or flow Priority profiling, via  Wendougee E-Bar app
Brew boiler 0.8 L, 316L stainless steel
Steam boiler 1.8 L, 316L stainless, 2,5 bar at ~140 °C;
Group head Saturated Group Head 58mm
PID Dual, independent per boiler
Control Wooden paddle 
Sensors German WIKA pressure sensor, Italian GICAR flow meter, Italian ODE solenoid valves, analog WIKA steam gauge
App Wendougee E-Bar (iOS/Android), Bluetooth, over-the-air firmware, profile sharing
Grinder/scale integration Wendougee MILO II / MILO Play / ARES / RKONE grinders;  BooKoo / Acaia scale (soon)
Water 1.5 L removable tank + plumb-in kit (included)
Portafilter 58 mm bottomless, wooden handle; 18g + 22g baskets + blind basket
Steam wand Cool-touch, four-hole tip
Dimensions (W×D×H) 290 × 490–520 × 370 mm (~460 mm tall with tablet stand)
Weight ~25 kg
Body Stainless steel; copper internal pipework; milled stainless distribution block
Heat-up ~10 min heat up time
Power 220–240 V, 2800 W
Finishes Black, White, Gray
Warranty ( Vellutto) 2-yr private / 1-yr commercial

Wendougee DATA S Pros and Cons

✔ Pros

  • ✔Excellent build quality
  • ✔Quiet gear pump
  • ✔Pressure & flow profiling
  • ✔Powerful dual boiler
  • ✔Commercial-grade components
  • ✔Great steam performance
  • ✔Saves brewing profiles
  • ✔Premium materials

✘ Cons

  • ✘Expensive for beginners
  • ✘App still needs improvement
  • ✘No built-in screen

Vellutto's Verdict

The Wendougee DATA S is a machine that came to fill up a big gap that has existed in the market for a long time. It's a dream come true for a lot of coffee enthusiasts who wanted to have the extreme control over their extraction, including myself. However, I do not believe it's a machine to start your coffee journey. The ability to have all this power and control over your extraction also opened a lot of space to do mistakes. What I would recommend for people who are just starting is to upgrade to the Wendougee DATA S after a couple of years, once they're more invested in the hobby and their current coffee machine starts becoming the limiting factor. Also, you need to keep in mind that the Wendougee DATA S is the flagship, which does provide a gear pump with huge boilers and can handle a commercial level demand. Another alternative for an enthusiast home barista who wants to upgrade their machine is the Wendougee LITA LA. They are great machines so you will not be compromising a lot. The only difference is the pump. Another valid option for you is WPM Primus, if you want less control, similar quality, with the gear pump option.

you can also check out comparison between the:
1. Read our article on the WPM Primus and the Fellow Espresso Series 1 Here.

2. Read our article on the WPM Primus and the Wendougee LITA BA Here.

3. Read our article on the Wendougee DATA S and the Wendougee LITA BA Here.

We are also always available to help you choose over the phone. Or you can chat with us on WhatsApp.

Before buying, make sure you have enough space for the machine and always use filtered water to help keep it in great condition for years to come. If you're still unsure whether it's the right machine for you, have a free call with Velluttot messages us on WhatsApp, and we'll be happy to help you make the right choice.

Disclosure:

Vellutto sells the Wendougee DATA. however, This review is not a sales pitch. It reflects my own experience after choosing the DATA S as my personal espresso machine and using it for around a year. I've aimed to be as objective as I can throughout, including where the machine falls short.

Sources

0 commentson Wendougee DATA S Review: My Thoughts | Vellutto
White Wendougee DATA S espresso machine in black with wooden portafilter handle
Black Wendougee DATA S espresso machine in black with wooden portafilter handle
Gray Wendougee DATA S espresso machine in black with wooden portafilter handle
Schematic diagram of Wendougee DATA S coffee machine with visible internal components on a transparent background
Wendougee DATA S Coffee machine with digital display on a black background, featuring technical specifications. like 316L stainless steel boilers, and 2800w heating power, 1.8L steam boiler and 0.8L saturated pro boiler for coffee extraction
Wendougee DATA S offer 1.5L quick-release water tank with a black background
Wendougee DATA S offer Variable pressure gear pump with technical diagram on a black background
Wendougee DATA S Screen of a digital app interface with graphs and text on a dark background of t5he Wendougee E-bar app to create your own pressure profiling curves
Wendougee DATA S White coffee machine with digital display on a gray background
Wendougee DATA S Black coffee machine with digital display on a black background
Wendougee DATA S Gray espresso machine with wooden handle on a black background

Wendougee DATA S Espresso Machine

Sale price€3.695,00Regular price €3.895,00

The Wendougee DATA S Espresso Machine at a Glance

The Wendougee DATA S Espresso Machine is not just another espresso machine. In fact, it is designed for people who value ritual, control, and the satisfaction of pulling a meaningful shot.

It features a dual-boiler design, a saturated 316L stainless steel group head, and a quiet gear pump. Additionally, it offers app-based pressure and flow control. As a result, it delivers a more thoughtful espresso experience at home.

What Sets the Wendougee DATA S Apart

The Wendougee DATA S Espresso Machine balances instinct and precision. For example, you can keep things simple or fine-tune every shot using the E-bar app. Moreover, you can save your favourite profiles and reuse them anytime.

Furthermore, it uses Italian GICAR Flow meter, ODE Solenoid Valves, German WIKA Pressure Sensor and WIKA Pressure Gauge all high-quality commercial grade components.

It also integrates with compatible grinders like the Wendougee MILO and ARES. Furthermore, it connects with scales such as BooKoo scales. Consequently, this enables brew-by-weight functionality and real-time data tracking.

The result is a smoother, more personal workflow that makes every coffee session more satisfying.

Who the Wendougee DATA S Is For

It is built for people who care about the cup, but also care about how the moment feels.

Indeed, it is the kind of machine that makes you slow down. Moreover, it invites you to pay attention and enjoy the process as much as the espresso itself.

For home baristas who have outgrown "good enough," the DATA S offers a more expressive way to brew. Ultimately, it delivers precision when you want control and convenience when you need simplicity. Thus, it brings café-level espresso into everyday life.

Nicknamed "The Mockingbird Machine"

Marko at Bella Barista calls the DATA S the "Mockingbird machine." That's because it can replicate virtually any espresso profile from other machines.

For instance, you can import shot parameters from machines like the Decent DE1 or Slayer. You can also import them from the La Marzocco Linea Mini or Profitec Pro 800. Then, you can run them on the DATA S.

Why choose the DATA S

Dual-boiler thermal control.

The DATA S is built around two independent boilers, one dedicated to brewing, one to steam, each managed by its own PID controller. That separation means brew temperature holds precisely where you set it, shot after shot, while steam pressure stays ready the moment you need it. The result is the kind of thermal consistency that turns great espresso into repeatable every day espresso.

Advanced pressure and flow profiling.

A commercial gear pump — the same class of pump found in professional bar machines — gives the DATA S smooth, linear command over pressure from pre-infusion all the way through the tail of the shot. Where vibratory pumps deliver a fixed, blunt push, the gear pump lets you shape each extraction: a soft bloom to open the bed, a peak pressure window to develop body and sweetness, a controlled taper to keep bitterness in check. That range of expression is what pressure profiling is actually for.

Saturated group head in 316L stainless steel.

The group head on the DATA S is fully saturated — constantly bathed in boiler water — so it reaches and holds brew temperature with minimal drift between shots. The 316L stainless steel construction resists corrosion and retains heat evenly, keeping the thermal environment around the puck stable even during back-to-back extractions.

E-Bar app ecosystem.

The DATA S connects to the Wendougee E-Bar app via Bluetooth, giving you a profile library, live pressure and flow curves, and integration with compatible grinders and scales. You can dial in a recipe once, save it, and recall it exactly, or use the data to understand why a shot tasted the way it did and adjust accordingly. The machine works without the app, the app just makes it work better and give full control.

Tank or direct plumb-in.

The DATA S supports both reservoir and direct water line connections, so it fits the practical reality of your kitchen, whether that means a countertop tank setup or a dedicated water line in a future renovation. Switching between the two requires no compromise on performance.

Learn more about Wendougee.

Keep scrolling down to uncover everything the Wendougee Data S has to offer.

Color
Color: White
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FAQs

Please read our FAQs page to find out more.

Does flow control reduce channeling?

It can. On a constant-pressure machine, flow speeds up as the puck weakens, opening channels late in the shot. Holding flow steady prevents that acceleration. Scott Rao describes flow control healing channels: when one forms, the pump slows, the grounds rearrange, and the channel shrinks.

Is 9 bar the best pressure for espresso?

Not necessarily. The 9-bar standard comes from 1947 spring-lever machines and was carried into pump machines by the 1961 Faema E61. Research from 2020 found that dropping pressure from 9 to 6 bar reduced clogging, widened the usable grind range, and produced higher, more consistent extraction. Many modern shots, especially light roasts, are better below 9 bar.

How does profiling affect light versus dark roasts?

Light roasts are dense, less soluble, and prone to channeling under hard pressure, so they benefit from longer pre-infusion and a lower peak around 6 to 8 bar. Darker roasts are softer and more soluble and tolerate more standard profiles. Profiling lets one machine handle both without changing your whole setup.

Is pressure profiling worth it?

Yes, with realistic expectations. Peer-reviewed research shows flow and pressure measurably affect extraction, with the biggest practical payoff on light roasts, channeling control, and shot consistency. But brew ratio, grind, dose, and puck prep matter more, so profiling is a refinement, not a magic fix. James Hoffmann calls the flavour gain "a small benefit"; Scott Rao considers flow control and a post-infusion pause major improvements.

is the Wendougee DATA S the best machine for pressure profiling?

It depends on your budget and how much control you want. Gear-pump machines like the Wendougee DATA S and WPM Primus give true software pressure and flow profiling. The Wendougee LITA line offers programmable control in a compact dual-boiler body. Spring-lever machines provide a natural declining curve, and an E61 flow-control kit is the cheapest entry point.

What's the difference between pressure profiling and flow profiling?

They control different variables in the same equation: pressure equals flow times puck resistance. Pressure profiling fixes pressure and lets flow rise as the puck erodes; flow profiling fixes flow and lets pressure fall. Flow control is better for healing channels mid-shot; pressure control is the more intuitive way to recreate a lever-style curve.

What is flow profiling in espresso?

Flow profiling is varying the water flow rate (millilitres or grams per second) during a shot and letting pressure adjust to match. It is often done with a needle valve or in software, and it is especially good at preventing the late-shot flow acceleration that causes channeling.

What is pressure profiling in espresso?

Pressure profiling is varying the water pressure during a shot instead of holding a constant 9 bar. A typical profile uses low pressure to wet the puck, a higher peak to drive extraction, and a decline toward the end. It changes how evenly the coffee extracts and how the shot tastes.

Does the Wendougee DATA S ship to the EU and EEA?

Yes. Vellutto ships the Wendougee DATA S across the EU and EEA with insured carriers. Handling is 1–2 business days, transit 2–7 business days depending on destination.

How Do I Set Up the Wendougee DATA S Espresso Machine for the First Time?

To set up your Wendougee DATA S for the first time, follow these steps to ensure both boilers are properly filled before activating the heating elements:

  1. Fill the water reservoir completely.
  2. Turn on the machine. The pump will automatically start and begin filling the steam boiler.
  3. Once the steam boiler is full, check the water reservoir and refill it if necessary.
  4. Press the brew button or use the paddle on the group head. This will start the filling process for the brew boiler.
  5. After a short time, water will begin flowing from the group head. When you see a steady flow with good pressure, both boilers are fully filled.
  6. You can now safely activate the heating elements through the tablet interface.

Important Water Quality Recommendation

Always use filtered water in your Wendougee DATA S espresso machine. Hard water can cause scale buildup inside the boilers and hydraulic system, which is one of the most common causes of performance issues and costly repairs. Using properly filtered water helps protect your machine, maintain brewing performance, and extend its lifespan.

What is the difference between the DATA S and the Wendougee LITA?

Both machines come from Wendougee's prosumer range, but they're aimed at pretty different users.

The DATA S is the serious one. Dual boiler, gear pump, and full pressure and flow profiling through the Wendougee E-bar app. The 1.8L steam boiler handles milk steaming without breaking a sweat — useful if you're pulling back-to-back drinks or working with larger jugs. The gear pump matters too: profiling curves come out smoother and more repeatable than anything a vibration pump can do, so if you're dialling in specific extraction shapes, this is the one. You can also plumb it straight into a filtered water line, which means no tank to refill.

The LITA is smaller, lighter, and more affordable. It uses dual vibration pumps and a 0.8L steam boiler — fine for one or two drinks at a time, but it'll run out of steam faster and isn't as thermally stable under load. What it does have that the DATA S doesn't: an onboard display and a control disc right on the group head, so you can tweak settings without pulling out your phone. It's also much kinder to a small kitchen counter.

Pick the DATA S for steam power, gear-pump profiling precision, and direct water plumbing. Pick the LITA if budget, footprint, or built-in on-machine controls matter more than raw capability.

Do I need a Wendougee grinder to use the DATA S?

No — the DATA S works with any grinder. That said, pairing it with a Wendougee grinder unlocks extra features through the E-bar app:

  • Wendougee MILO II or MILO Play: you can save a grind size to each profile and recall it with a single tap in the E-bar app, so switching between beans or profiles doesn't mean re-dialling from scratch.
  • Wendougee ARES: goes one step further and syncs the grind size automatically when you change profiles. It cuts dial-in time significantly, which is mostly a win in commercial settings where you're switching beans throughout the day.
What is max flow rate and how does the DATA S control it?

Max flow rate is the upper limit on how much water the group can push through the puck per second. On the DATA S it's set by a needle valve under a small access hole on top of the machine. Open the valve with a flat-head screwdriver to raise the limit, close it to drop it. Factory setting is 12 ml per second, which suits most workflows.

Is the gear pump louder or quieter than a vibratory pump?

No — gear pumps are noticeably quieter than vibration pumps, much closer to a rotary pump in sound. You get a smooth, even hum rather than the buzzy rattle a vibratory pump makes.

Most DATA S owners say the steam wand and the grinder are louder than the pump itself. Pulling an early shot won't wake someone sleeping in the next room, which is a real problem with a lot of vibration-pump machines.

Can the Wendougee DATA S be plumbed directly into a water line?

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What is included in the box?
  • 58mm bottomless portafilter with wooden handle
  • Wendougee competition baskets, 18g and 22g
  • Backflushing disc
  • Shower screen brush
  • Plumb-in kit
  • Tablet / iPhone stand (handy for the E-bar app while you're dialling in)
  • Wendougee DATA stickers
Why is they call the DATA S Mockingbird machine?

The nickname comes from Marko at Bella Barista. The idea: the DATA S can replicate virtually any espresso profile from any other machine. Take the shot parameters off a Decent DE1, a Slayer, a La Marzocco, a Profitec Pro 800, or even a lever machine, build the equivalent curve in the E-bar app, and run it on the DATA S.

Is the Wendougee DATA S similar to the Decent espresso machine?

Both machines handle pressure profiling and flow control, but they get there through completely different engineering.

The DATA S is built around traditional boilers with accurate temperature probes, so thermal stability comes from sheer thermal mass. It runs a gear pump, which is quieter and better built than the vibration pumps most machines use. And because it's a true dual boiler, you can pull a shot and steam milk at the same time.

The Decent DE1 uses thermoblock technology instead — water is heated rapidly on demand, right before it hits the group head. It runs two vibration pumps, one for cold water and one for hot. You can't brew and steam simultaneously on a DE1. What the Decent does give you that the DATA S doesn't: temperature profiling through the shot, adjusting the brew temperature mid-pull.

So it comes down to what you care about: dual-boiler thermal feel, simultaneous brew and steam, and a quiet gear pump point toward the DATA S. Mid-shot temperature control points toward the Decent.

What is flow profiling and how does it differ?

Flow profiling controls the amount of water per second rather than the pressure. As the coffee puck changes resistance during extraction, the pressure will rise and fall to maintain a constant flow rate. This can lead to more even extractions. In flow mode, the gear pump adjusts its speed to maintain the set flow rate. The principle is similar to what the Decent DE1+ does.

What is a saturated group head and why does it matter?

A saturated group head means the brew boiler is physically integrated with the group head, so the water and metal are always at the exact same temperature. This eliminates heat loss between the boiler and the coffee puck, giving you rock-solid brew temperature stability shot after shot. It's especially noticeable when brewing light roasts, which are sensitive to temperature fluctuations. This design is borrowed from high-end commercial machines like La Marzocco.vellutto

Which mode should I use pressure profiling or flow priority?

Honestly, it depends on the coffee and what you're chasing in the cup.

Pressure profiling is the intuitive choice if you've used a lever machine — you think in pressure phases, and that's what the curves look like. Flow profiling is often easier to dial in, because the pump quietly corrects for small grind inconsistencies that would otherwise throw off a pressure-based shot.

What is the Wendougee E-Bar app and what can it do?

The E-Bar app connects to the DATA S via your smartphone or tablet (device not included). Through the app you can:eightouncecoffee+2

  • Program custom pressure/flow profiling curves
  • Monitor brew temperature, shot timer, and water usage in real time
  • Set pre-infusion time and duration
  • Receive maintenance and low-water alerts
  • Save and name your own shot recipes
  • Download and share profiles with the global Wendougee community
  • Receive over-the-air firmware updates

The app supports both iOS and Android.eightouncecoffee

How long does the Wendougee DATA S take to heat up?

About 10 minutes from cold to brew-ready, which is faster than most E61 machines. For best consistency, let it sit a couple of minutes longer after it hits temperature so the group head and portafilter fully stabilise before your first shot.

What components and materials are used inside the Wendougee DATA S?

The DATA S is built with high-quality European and premium components:vellutto+1

  • ODE solenoid valves (German)
  • WIKA pressure sensor (German) — for accurate pump pressure monitoring
  • WIKA manometer — displays steam boiler pressure
  • Gicar flow meter (Italian) — precisely measures water flow in real time
  • 316L stainless steel boilers and group head
  • Copper hot water lines throughout
  • PTFE tubing for pressurized lines (ambient temperature only)
  • Silicone for tank-to-pump line (ambient temperature only)
  • No plastic in any hot water pathstomscoffeecorner
Can I share espresso profiles with other Wendougee DATA S users?

Yes. The Wendougee E-bar app includes a Community tab where users upload and download profiles, so beginners can pull up recipes from experienced baristas instead of dialling everything in from zero.

One thing to be realistic about: downloading a profile won't give you someone else's exact shot. Grinder, beans, water, and ambient conditions all push the result around, so a shared profile is a head start — you'll still need to tweak the grind and probably adjust a few parameters to make it sing on your setup.

Can the Wendougee DATA S stop extraction by weight using a scale?

Yes. The DATA S pairs with an external scale over Bluetooth and cuts the shot automatically when it reaches your target weight — no watching the scale and reaching for the paddle.

Supported scales right now:

  • BooKoo
  • Acaia (soon)
How do I maintain the Wendougee DATA S?
  • Daily: rinse the group head with water and clean the steam wand after every use.
  • Weekly: backflush with a dedicated espresso-machine detergent like Cafiza.
  • Every 3–6 months: descale the boilers. Frequency depends on your water hardness.

The Wendougee E-bar app includes a maintenance program that tracks these intervals and pings you when something's due.

The full manual isn't publicly available yet, so for anything beyond basic upkeep, get in contact with us for more details.

What kind of water should I use in the Wendougee DATA S?

Filtered water in the 15–60 ppm TDS range with balanced alkalinity works best — it extracts well and won't chew up the boilers.

If you're plumbing the DATA S in directly, you need a proper filtration system on the line. Unfiltered tap water will cause limescale buildup inside the boilers and eventually damage the machine.

Does the Wendougee DATA S fit under standard kitchen cabinets?

Usually yes, but measure first. The machine's footprint:

  • Width: 29 cm
  • Depth: 50–52 cm
  • Height (without tablet): 37 cm
  • Height (with tablet on the stand): around 46 cm

Most standard under-cabinet clearances will accommodate it even with a tablet mounted, but check two things before committing: the depth (you need counter space for the full 50–52 cm plus room behind for hoses/plumbing) in case you wanna connect directly to the water supply with a filter and check the clearance in front for swinging the portafilter in and out.

Can the Wendougee DATA S firmware be updated?

Yes. The Wendougee E-bar app gets regular updates that add new features, and machine firmware is flashed through the same app — you don't need cables or a service visit.

Follow the manufacturer's instructions when an update runs. Don't unplug the machine or close the app partway through, or you risk bricking the firmware.

What problems does the Wendougee DATA S solve, and why choose it?

Most of the DATA S's features map directly to specific frustrations home baristas run into. Here's how it handles them:

Inconsistent shots. The gear pump holds pressure steadily with real-time feedback, so shot-to-shot variation drops and your profiles actually become reproducible instead of lucky.

Not enough control over extraction. Choose pressure profiling or flow profiling, adjust the pump in fine increments, and build whatever curve you want — pre-infusion ramps, pressure plateaus, declining tails. Every profile saves in the E-bar app and recalls with a tap.

The learning curve on manual machines. The E-bar app shows live pressure, flow, and temperature graphs while you pull, and lets you save what worked. Pair it with the MILO II grinder and Themis scale and you get a guided dial-in workflow that walks you through the process step by step.

Temperature swings. Two independent stainless-steel boilers, each with its own PID controller, handle brew and steam separately. Stability is on par with commercial machines.

Slow warm-up. About five minutes from cold to brew-ready — faster than most E61 machines in this category.

Loud, uneven pumps. The gear pump is much quieter than a vibration pump and gives smoother pressure transitions. In sound and feel, it's closer to a rotary.

Grinder and scale integration that doesn't really exist on most machines. Paired with the MILO II and the Themis, grind size syncs to each profile and the shot stops automatically at your target weight.

No way to learn from other baristas. The E-bar app has a community feed for uploading and downloading extraction curves. Starting from a proven profile is a lot friendlier than building from zero.

Cleaning. Programmable cleaning cycles, a three-way valve that makes backflushing simple, and a front-access drain on the steam boiler for routine maintenance.

Footprint. 29 cm wide, 50 cm deep — narrower than most commercial-style dual boilers, so it fits on a normal kitchen counter instead of taking it over.

What the DATA S unlocks beyond fixing those problems:

  • Room to experiment with profiles you can't build on a manual machine
  • Actually getting what you paid for out of expensive beans
  • Pulling extreme light roasts — the high-acidity Scandinavian-style coffees that most home machines struggle with
How does the DATA S compare to the Lelit Bianca and ECM Synchronika?

All three are dual-boiler prosumer machines in roughly the same price tier, but they solve different problems.

The Lelit Bianca is E61-based with a manual flow-control paddle. You shape the shot by hand, in real time, every pull. It's the enthusiast's dream if you want to feel the shot, but there's no programmable profile, no app, no repeatability between shots unless your hand is very steady.
The ECM Synchronika is the traditional choice. E61, dual boiler, rotary pump, rock-solid build. No profiling at all, you get temperature and steam, and that's the pitch. If you want a machine that will outlive three apartments and never surprise you, this is it.

The Wendougee DATA S sits in a different category. Saturated 316L group instead of E61, gear pump instead of vibratory or rotary, and full pressure-and-flow profiling through the E-bar app with saved profiles per coffee. You design the curve once, run it from the paddle, and get the same shot every time. Scale-stop and grinder sync are built in.

Pick the Bianca if you want hands-on paddle control. Pick the Synchronika if you want a machine that never changes. Pick the DATA S if you want programmable, repeatable, software-driven shots with an ecosystem around it.

Didn’t find your answer?

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