Looking for a compact, affordable way to make espresso-style coffee at home? CoffeeGearGurus.com reviews the Fellow Prismo AeroPress attachment and shares their real-world experience with it.
By Clint Doerfler – Coffee Enthusiast, CoffeeGearGurus.com
As a long-time coffee nerd and someone who’s brewed more AeroPress coffee than I care to admit, I’ve tested just about every accessory under the sun. But the Fellow Prismo has stuck around in my brewing setup for good reason. This small AeroPress attachment promises to give you a closer-to-espresso experience without investing in a bulky espresso machine—and I’ve found it delivers more than you might expect.
Get the Original AeroPress on Amazon
In this detailed Fellow Prismo review, I’ll break down how it works, how to get the most out of it, and whether or not this compact tool is the right fit for your coffee setup. Whether you're a casual AeroPress user or someone looking to take their coffee game to the next level, this post is for you.
At its core, the Fellow Prismo is a pressure-actuated AeroPress attachment that replaces the standard filter cap. It’s designed to build up pressure inside the AeroPress chamber, allowing for longer immersion brewing and a stronger final cup. The result? A small, intense shot of coffee that's rich, bold, and, yes, a little closer to espresso than your average cup.
It includes:
The valve only opens when you press down on the plunger with enough force, allowing you to brew without the messy inverted method and helping to avoid early dripping that can ruin immersion brews.
As with most Fellow products, the Prismo is smartly designed. It’s a heavy-duty plastic cap that securely screws into the AeroPress filter ring, and the stainless steel metal filter is ultra-fine, catching the majority of fines while letting those delicious coffee oils pass through.
The Prismo filter can be used alone or with a paper filter on top if you prefer a cleaner cup. Personally, I find the combo of metal + paper offers the best of both worlds: clarity and body.
Using the Fellow Prismo AeroPress attachment is straightforward, but for best results, a few adjustments to your brewing method are needed. Here's how I use it to get espresso-style coffee from the AeroPress.
My Espresso-Style Recipe (Fast & Strong)
Steps:
You’ll feel resistance from the pressure-actuated valve, but once it releases, you get a rich, concentrated shot that’s close to espresso.
One of the big benefits of the Prismo is that it eliminates the need to brew inverted. If you’re like me and have knocked over your AeroPress mid-brew (more than once), you know how valuable that is.
The valve holds everything in the chamber until you're ready to plunge, giving you complete control over immersion and timing.
Let’s be real—the AeroPress doesn’t generate enough bars of pressure (it tops out around 0.7 bars) to match a traditional espresso machine (which hits 9 bars). So if you're expecting a true espresso shot with velvety crema, you're going to be disappointed.
That said, the Prismo makes something impressive: a dense, full-bodied shot with bold flavor and a touch of foam if you’re using fresh coffee and a fine grind. It’s great in milk-based drinks, iced Americanos, or as a base for lattes.
If you want to geek out and maximize extraction, try the Jonathan Gagné method:
This method extracts more sweetness and clarity from the beans—ideal if you want to take your Prismo AeroPress brews to the next level.
Unlike the standard AeroPress filter, the reusable metal filter in the Prismo does require a little extra care. Finer coffee grounds can clog the mesh if left unwashed.
After brewing:
Also, keep an eye on the small rubber pressure-actuated valve—it can wear out over time, but replacements are easy to find from Fellow.
The Prismo attachment is compact, lightweight, and ideal for travel. I pack it with my AeroPress Go, a small scale, and a bag of beans whenever I hit the road.
Although Fellow officially says the Prismo isn't compatible with the AeroPress Go, I’ve used them together without issue. The diameters match, and it fits just fine. Use at your own risk, but in my experience, it works.
The Fellow Prismo isn’t a one-trick pony. You can use it to brew:
When I want something creamy, I froth up milk, add a touch of maple syrup, and pour it over a Prismo shot—boom, homemade maple latte.
If you're using the AeroPress alone, you're already ahead of the game. But if you want to make espresso-style coffee, ditch the inverted method, or just get more versatility out of your AeroPress coffee maker, the Fellow Prismo attachment is worth every penny.
For around $25–$30, it’s a low-cost way to brew richer coffee with better control. No, it won’t replace a traditional espresso machine, but it will give you more brewing options and better flavor—especially if you like to brew one cup at a time.
Looking for a compact, affordable way to make espresso-style coffee at home? CoffeeGearGurus.com reviews the Fellow Prismo AeroPress attachment and shares their real-world experience with it.
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