Weber Workshops Portafilter Review: Is This the Ultimate Espresso Upgrade?

 It’s safe to say most people are already familiar with Weber Workshops. Their frequent product launches, along with their thoughtful design philosophy and clever engineering, are always things I enjoy diving into. That said, I’d never actually purchased any Weber products before—mainly because, aside from the price, there’s really nothing to complain about… haha.

Recently, I started thinking about upgrading my current La Marzocco portafilter bottomless portafilter (even though it’s not cheap either). But after some consideration, I realized that if the change was only about aesthetics or materials, it didn’t feel meaningful enough. So I decided to go all in and aim for the “ceiling” of portafilters—and that’s what led to today’s review of Weber’s integrated portafilter.

I’ve actually been using this Weber portafilter for quite a while before writing this, so I can finally share a detailed and honest experience. As early as 2022, I introduced its launch, and it immediately stood out as a unique and disruptive design. It completely abandons the traditional detachable basket structure and instead is machined from a single solid piece of stainless steel.

That uniqueness is evident the moment you open the box. The mirror-like finish is almost blinding—it literally sparkles. I have to admit, in that moment, I was dazzled… maybe even by the “cost” of it, haha. The packaging itself is compact. Inside, you’ll find a hefty 500g portafilter, along with a metal puck screen and 100 sheets of specially designed espresso filter paper. These papers are based on CAFEC’s 0.15mm specification.

Before using it, it’s important to understand the core concept behind this integrated portafilter. Only then can you really grasp where its value comes from. In fact, it represents Weber’s design philosophy taken to the extreme: eliminating variables and improving extraction consistency.

So what makes it fundamentally different from a traditional portafilter?

First, in conventional designs, the basket is held in place by a spring clip. The seam can trap coffee grounds, and improper installation may lead to leaks or pressure loss. The integrated design eliminates this issue entirely.

Second, because the Weber portafilter is CNC-machined from a thick block of metal, it has a very high thermal mass. This reduces the impact of incoming water temperature fluctuations and helps maintain stable extraction temperatures.

Although it weighs about a pound on the scale, it actually feels lighter in hand compared to my previous La Marzocco portafilter. When using it, you must preheat it thoroughly—either let it sit for a few minutes or run several blank shots. Only start brewing once the bottom feels warm to the touch.

If it’s still cold, it will absorb a significant amount of heat from the brewing water, leading to under-extraction and a sharp, sour taste.

Once the portafilter is properly heated, you’ll need to use Weber’s dedicated filter paper. These papers have a dual-sided structure: one side is textured, and the other is smooth. I strongly recommend using them every time. Even though they’re consumables, they play an essential role in the extraction process.

Make sure the smooth side faces up—this allows the coffee bed to form a flat, even surface. The textured side faces down, creating space between the paper and the metal surface, which helps liquid flow out more efficiently and speeds up the shot.

Using filter paper in espresso is quite uncommon, but it significantly improves clarity in the cup. The included metal puck screen sits on top of the coffee bed to ensure even water distribution. So your full stack, from top to bottom, looks like this: puck screen → coffee grounds → filter paper—a “sandwich” structure designed for stability and consistency.

From a usability perspective, there’s one key adjustment you’ll need to make: the basket size is fixed. And compared to standard double baskets, it holds more coffee.

That means you can’t dose too low. I’d recommend starting around 20g, slightly higher than a typical basket of the same diameter. From there, adjust based on roast level and grind size. The goal is to have the puck just barely touch the shower screen after extraction, forming a complete and even puck.

For distribution and tamping, using a WDT tool is essential to break up clumps and evenly distribute grounds across the complex bottom structure.

Since the base is flat, the portafilter can sit level on a table, making it easier to use with an automatic tamper. Apply moderate pressure, but focus on keeping the tamp level—avoid any tilt.

Now, let’s talk about extraction behavior.

With traditional bottomless portafilters, we often look for that classic “mouse tail” flow to judge puck prep. While the Weber is also bottomless and allows visual feedback, what you typically see instead is a dispersed flow—especially in the early stages. This is often referred to as a “syrup rain.”

Why does this happen?

In traditional baskets, under 9 bars of pressure, the base slightly deforms—almost imperceptibly—creating a subtle funnel shape. This funnels all the liquid toward the center, forming a single stream.

But the Weber portafilter is a solid block of stainless steel with extremely high rigidity. It doesn’t deform under pressure. Without that funnel effect, the espresso exits evenly from all the holes at the bottom, resulting in that “rain-like” dispersion.

Additionally, traditional baskets often have a solid ring near the edges due to manufacturing limitations. Weber uses laser-cut holes that extend all the way to the vertical walls, enabling true full-area extraction across a 58.5mm puck.

Because extraction happens evenly across the entire puck, the liquid doesn’t converge—it blooms outward.

This “syrup rain” actually makes it easier to diagnose extraction. If one side flows slower or faster, or if a certain area shows little activity, you can immediately identify distribution or channeling issues.

Compared to traditional single-stream observation, this is far more intuitive. Personally, I focus more on overall flow consistency and final taste.

Another standout aspect is the locking experience. The Weber portafilter feels noticeably more secure and precise when engaging with the group head.

With my previous La Marzocco bottomless portafilter, I occasionally had issues with it not locking tightly—and yes, I’ve had it “pop out” before, which was pretty terrifying. This Weber completely eliminates that concern. Every lock-in feels smooth, firm, and reliable.

It’s also extremely easy to clean—no seams, no hidden areas for residue or mold.

There are two handle options: rubber and walnut wood. The walnut version costs about $100 more, but the aesthetics and tactile feel are on a completely different level. Personally, I prefer the walnut—it’s beautifully crafted and feels like a piece of art on your coffee station.

Of course, it’s not without drawbacks.

Because it’s a one-piece design, knocking out the puck is more difficult. Traditional knock bars don’t work as effectively. You’ll need to knock harder while it’s still hot or use a dedicated knock box. Even then, the puck may not come out cleanly or retain its shape.

In terms of flavor, I find this portafilter particularly well-suited for light roasts. Its excellent thermal stability helps extract more nuanced flavors.

Sweetness is especially pronounced, and with certain beans, the improvement is very noticeable. The flavor clarity, extension, and saturation are all enhanced. You get a cup that’s clean yet still full-bodied.

It also performs very well in milk drinks, and overall, it increases your margin for error during brewing.

Finally, let’s talk about the downsides.

There’s definitely a learning curve. It’s not something you can master immediately—you’ll need patience to dial in the right dose and grind size. In a way, introducing this tool creates a “butterfly effect,” forcing you to adjust other variables in your setup.

Also, I wouldn’t recommend this for most home espresso machines.

Compatibility can be an issue. The portafilter is quite thick, and on machines with limited clearance between the group head and body, it may not lock in properly.

More importantly, its performance depends heavily on the machine itself. High-end tools only shine when paired with equally capable equipment. Given its price—far higher than standard or even many premium portafilters—using it on an entry-level home machine may not yield noticeable improvements.

And if you can’t taste the difference, it probably won’t feel worth it.

Why Espresso Beans Need a Longer Rest Than Pour-Over Coffee (Coffee Degassing Explained)

 It’s widely known that freshly roasted coffee beans are not ideal for brewing right away. During roasting, coffee beans accumulate a large amount of carbon dioxide inside their structure. When too much CO₂ is present, it interferes with hot water’s ability to extract aromas and flavor compounds, resulting in a cup that simply doesn’t taste as good.

Fortunately, carbon dioxide naturally escapes from the beans over time. By allowing the beans to rest, we reduce the amount of CO₂ trapped inside. Once the gas level drops to the point where it no longer significantly affects extraction, it becomes much easier to brew a great-tasting cup of coffee. This resting window is what coffee lovers commonly refer to as the “degassing” or “resting” period.

If you regularly buy whole beans and brew at home, you’re probably familiar with this concept. Beans used for pour-over brewing typically need about 3 to 7 days of rest, depending on the roast level. However, if you’re buying beans intended for espresso, you’ll notice that the recommended resting period is usually several days longer.

Many people find this confusing. After all, coffee beans are coffee beans—so why do espresso beans need more time to rest?

The answer mainly comes down to two factors, the first being roast level.

I’ve mentioned before that coffee beans roasted for espresso are generally darker than those intended for pour-over. The reason is simple: a darker roast increases sweetness and flavor intensity while reducing acidity.

Espresso isn’t just consumed as straight shots—it’s also the base for milk-based drinks like lattes, cappuccinos, and flat whites. If the roast is too light, the coffee flavor won’t be strong enough and can easily be overwhelmed by milk.

On top of that, lighter roasts tend to retain more acidity, which doesn’t always pair well with milk. The result can be a milk drink that tastes sharp or unbalanced. Because of this, many roasters use different roast profiles for the same coffee depending on the intended brewing method.

If a coffee is meant for pour-over, cold brew, or other single-origin brewing styles, it’s usually roasted lighter to preserve floral aromas and fruity notes, allowing you to experience more nuanced flavors. If that same coffee is intended for espresso, the roast will typically be slightly darker to ensure enough intensity to stand up to milk and to create a more harmonious flavor profile.

For example, Ethiopian Gesha is a coffee I often mention. If you’ve ever purchased it from my Taobao or Tmall store, you may have noticed that it’s offered in two roast levels: a light-medium roast for pour-over and other filter methods, and a medium roast designed specifically for espresso.

The darker the roast, the more carbon dioxide the beans tend to contain. Naturally, this means espresso beans—being more deeply roasted—require a longer resting period to release excess CO₂.

At this point, some people might ask: If I use the same coffee and the same roast level for both espresso and pour-over, shouldn’t the resting time be the same?

My recommendation is still to rest espresso beans longer.

This is because carbon dioxide has a much greater impact on espresso extraction than on pour-over. The key reason lies in the brewing method itself.

Pour-over, cold brew, French press, and siphon brewing all take place under normal atmospheric pressure. In these methods, extraction is relatively controllable. You can adjust variables like agitation, brew time, water temperature, and grind size to manage extraction efficiency. Under these conditions, the influence of CO₂ is noticeable but generally manageable.

Espresso, on the other hand, is brewed under pressure. With pressure assisting extraction, we can produce a highly concentrated coffee in a very short amount of time. To achieve this, espresso requires an extremely fine grind and relatively high water temperature, pushing extraction into a very intense and unforgiving zone.

As a result, extraction control is lower, and the negative effects of excess carbon dioxide are amplified.

Because espresso shots are brewed quickly and yield a small volume of liquid, there’s very little opportunity for gas to escape during brewing. When too much CO₂ is present, it becomes difficult to achieve a fully extracted, well-balanced shot without extensive dialing-in. That process consumes both time and beans, making it costly and inefficient.

For this reason, when a coffee is intended for espresso, it’s best to let it rest a few extra days. Once the carbon dioxide level drops to the point where it no longer interferes with extraction, you’ll not only save time and beans during dialing-in, but you’ll also end up with a far more delicious espresso.

5 Common Causes of Espresso Channeling and How to Fix Them

 As mentioned earlier, most cases of channeling occur due to improper handling. So if we want to minimize the chances of channeling, it’s worth taking a look at the following points and see which ones you may need to improve.

1. Uneven Distribution of Coffee Grounds

Distribution and tamping are the two key steps before pulling an espresso shot, and the correctness of these steps is directly tied to the likelihood of channeling. Let’s start with distribution. The purpose of distributing the coffee grounds is simple: spread the grounds evenly across every corner of the portafilter basket. Only when the grounds are evenly placed can the puck create consistent resistance throughout, preventing hot water from concentrating on a single area during extraction.

Although the goal is simple, many people still trigger channeling frequently because they don’t distribute properly. Some want to save time, others assume distribution isn’t important, so they casually swipe the grounds to “get it done.” Some skip distribution altogether and move straight to tamping and extraction. All these behaviors significantly increase the risk of channeling and lead to less enjoyable espresso.

So if your distribution process looks like this, it’s worth paying more attention. Doing distribution properly makes it much easier—and more consistent—to pull a delicious shot of espresso.

2. Uneven Tamping Pressure

Next is tamping. After distributing the grounds evenly, the goal is to tamp evenly as well. If the pressure applied during tamping is uneven, then parts of the puck will have higher resistance while other areas will have lower resistance. Naturally, during extraction, hot water will flow toward the low-resistance areas first, resulting in uneven extraction.

Based on this, it’s clear that both distribution and tamping are crucial for a balanced espresso extraction. If you’re unsure how to do them properly, you can look up previous guides from Qianjie—they explain the detailed techniques.

3. Knocking or Bumping the Portafilter

Even if distribution and tamping are done correctly, we shouldn’t relax before extraction begins. Qianjie has noticed that some people are very careless when locking in the portafilter—they don’t line it up carefully and end up bumping or knocking it a few times before getting it in place.

This easily causes channeling because the bumps can create cracks in the puck, allowing hot water to rush through those cracks. To avoid this, try to reduce the number of bumps when locking in the portafilter—aim to get it aligned and locked in one smooth motion.

4. Dose Too Low or Grind Too Coarse

Another common cause comes from the coffee dose and grind size. When the grind is too coarse or the dose is too low, channeling becomes more likely.

Both situations reduce the resistance of the puck, making it easy for hot water to find a weak point and flow through it, causing channeling. The best solutions are to grind finer or increase the dose. Another option is to reduce brewing pressure (pressure profiling), but compared to adjusting grind size or dose, this method is less stable and harder to master. Therefore, Qianjie recommends fixing grind and dose first.

5. Too Many Clumps in the Coffee Grounds

As mentioned earlier, most channeling comes from operational issues, but not all of it. Sometimes the issue lies in the coffee grounds themselves. When grinding, coffee generates static electricity—this increases with finer grind size and dry weather. Static causes the grounds to cling to surfaces or each other, forming clumps.

When there are too many clumps, channeling becomes more likely because clumps create inconsistent resistance within the puck, allowing water to escape from low-resistance spots. This is easy to fix: if you notice a lot of clumps in your grounds, break them up with a WDT tool before distributing and tamping.

If you don’t have a WDT tool, you can also gently tap the portafilter to loosen the clumps, though it’s less efficient.

These are the common causes of espresso spraying and channeling during extraction, along with their solutions. Feel free to use them as references—if you’re making the same mistakes, correcting them will help you pull much better-tasting espresso shots.

Why You Should Always Use a Scale When Brewing Coffee: Accuracy, Consistency, and Better Flavor

 Whether I'm brewing pour-over coffee or making espresso, I always use a digital scale when measuring beans and during extraction.

Some friends who visit my shop don’t quite understand why. They think making a cup of coffee doesn’t have to be so complicated or tedious. Just like a seasoned chef who cooks using simple visual judgment—or using measuring spoons and cups—one can also brew a good cup of coffee. So to them, using a digital scale feels unnecessary and even a bit overkill.

To be fair, a digital scale is not an absolute must for making coffee. As those friends said, eyeballing, measuring cups, and measuring spoons can still produce tasty coffee. But what we need to understand is this: although these methods can help you brew a decent cup, they lack consistency. Unless you're an extremely experienced coffee veteran, I still recommend using a digital scale. For beginners, using the above “blind” methods will make your coffee quality feel like opening a mystery box—totally random.

Why do we need a digital scale for coffee?

Everyone has different preferences, but I believe most people share a similar definition of a “good cup of coffee”: balanced strength and no unpleasant flavors. In terms of extraction, this means proper concentration and extraction yield. We achieve this by using the right parameters to ensure our coffee lands within that ideal range.

The reason a digital scale is key to brewing consistently good coffee is simple: it ensures the amount of coffee grounds and water you use is the same every time, minimizing variables. Regular measuring spoons, cups, or visual judgment can’t achieve this level of precision. Not only that, if you overlook certain details when using those tools, the deviation might be far greater than you’d expect.

Let’s take the classic coffee measuring spoon as an example.

A traditional coffee scoop is designed to hold 10 grams of coffee beans. In my tests, one level scoop does typically yield about 10 grams ± 0.5 grams.

However—there’s a catch: this only applies to dark-roasted coffee beans. If you’re using light-roasted beans, the weight you get will be completely different. The dark-roasted beans I tested came from my own shop’s bean list: Brazil Queen Estate, Jamaica Blue Mountain No.1, and Sumatra Golden Mandheling.

Next, I tested the lighter-roasted beans: Yirgacheffe Gedi Dingu, Ethiopia ALO, and Panama Boquete Geisha.

As you can see, even with the same level scoop, the weights turned out to be 13.4g, 12.7g, and 11.7g—far more than expected, and with huge differences between them. The reason is exactly what I mentioned: roast level. Given the same roasting process, the darker the roast, the larger the bean volume and the lighter the weight. As roasting deepens, the beans expand and lose moisture, becoming lighter; light roasts behave the opposite way.

So the amount of coffee you get from a measuring spoon varies depending on the bean’s characteristics.

If you’re unaware of these changes and use the same amount of water to brew, then when you happen to scoop more coffee, you’ll end up with a cup that’s overly strong—sometimes so strong it’s almost undrinkable.

Let me give you an example using my Boquete Geisha beans.

The experiment is simple: brew two cups, one with 10g of coffee and one with 13g. All other parameters—including 150ml of water—are identical.

The result:

• The 10g brew is perfectly balanced, with clear floral, citrus, and berry notes.

• The 13g brew, however, tastes too intense. The high concentration makes it heavy and less enjoyable, and the flavors become overly compressed. Many delicate notes become hard to distinguish. You must dilute it with water to bring it back to a proper balance.

This is the kind of impact a small deviation in coffee dose can cause.

Next: liquid yield.

As I mentioned earlier, many people measure brewed coffee using the markings on their cup. But sometimes these markings don’t give accurate information—especially for espresso.

Below are two shots of espresso with the same liquid volume. Look closely: the liquid level is different.

This difference comes from the crema and the extraction yield. (The first is a medium-light Ethiopia Flower Queen, the second is a medium-dark espresso blend.)

For beginners, relying on cup markings to judge liquid weight can often lead to inaccurate data, making it difficult to adjust correctly. Combine that with errors in the coffee dose, and making a good espresso becomes a matter of luck.

So, if you want consistency…

If you want to brew consistently delicious coffee, or you want to experiment with parameters and adjust espresso more efficiently, a digital scale is absolutely worth using. Once you fully understand brewing logic and become familiar with a particular bean, you can switch back to scoops or measuring cups to simplify your workflow.