Fellow Prismo AeroPress Pressure-Actuated Filter Cap — Stainless Steel Reusable Filter, No-Drip Cold Brew Seal

The Fellow Prismo for AeroPress is a pressure-actuated filter cap that converts your AeroPress into an espresso-style brewer and a no-drip cold brew storage solution.

Designed to replace the standard AeroPress cap, the Fellow Prismo changes how pressure builds during pressing so you can extract a richer, more concentrated cup without an espresso machine. It also seals shut to let you brew full-immersion coffee without flipping the device, and its reusable stainless steel filter removes the need for paper while making cleanup simple and sustainable.

How does the Prismo create an espresso-like brew without a machine?

Prismo uses a one-way, pressure-actuated valve that stays closed until you begin plunging, letting pressure accumulate in the chamber and forcing water through the grounds more forcefully than the standard cap. The result is a denser, fuller-bodied concentrate that resembles espresso mouthfeel, suitable for milk drinks or concentrated black coffee.

• Pressure-actuated valve builds internal pressure before release
• Fine etched stainless steel filter provides consistent extraction
• Works with the same grind sizes you already use for stronger AeroPress shots

Can I make cold brew and store it safely with Prismo?

Yes—Prismo’s seal prevents dripping, so you can brew full-immersion cold coffee and place the assembled AeroPress in the fridge without leaks. The valve keeps liquid contained until you press, making overnight cold brew straightforward and tidy.

• No-drip valve lets you refrigerate the AeroPress upright without spills
• Full-immersion method enhances flavor extraction for cold brews
• Easy release when you’re ready to serve or transfer the concentrate

How does the reusable metal filter affect taste and cleanup?

The etched stainless steel screen filters out most fines while allowing oils and soluble flavors to pass, giving a heavier body than paper-filtered coffee. Cleanup is simple: eject the puck, rinse or wash the cap, and air dry—no disposable filters to stock or toss.

• Reusable stainless steel reduces waste from paper filters
• Preserves more oils for a fuller flavor profile
• Puck ejects easily; wash with warm soapy water and dry before storing

Will Prismo fit my existing AeroPress and how durable is it?

Prismo is built to attach directly to AeroPress models that use the common screw-on filter cap, so it fits like a drop-in replacement. Constructed from robust materials and a stainless steel filter, it’s made for repeated use and easy maintenance.

• Compatible with standard AeroPress caps and brewing technique
• Durable construction for daily use and travel
• Simple disassembly for washing and long-term care

Who is this for? The Fellow Prismo is ideal for AeroPress owners who want stronger, espresso-like concentrates without buying an espresso machine, people who appreciate reusable gear and reduced waste, and anyone who values a tidy, flip-free brewing workflow—including those who make cold brew and need leak-free refrigeration. It’s also a practical upgrade for commuters and home baristas seeking richer extraction and easier cleanup.