Fellow Products

Fellow Prismo filter for use with the AeroPress coffee maker

Grind Level Guide
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Superpowers for your AeroPress® Coffee Maker

Prismo is a pressure actuated valve designed to be used with the AeroPress® Coffee Maker. This attachment allows for a buildup of pressure to create espresso-style coffee and creates a no drip seal for a full immersion brew. The reusable 70 micron etched filter stops sludge in its tracks and eliminates the need for paper filters.  The valve’s small aperture also fits directly over an espresso shot glass.

The AeroPress® Coffee Maker was invented by our friends over at AeroPress, Inc. Since we love brewing coffee with the AeroPress® Coffee Maker, we created a tool to add to its versatility. If you don’t have an AeroPress® Coffee Maker, you should buy one! 

AeroPress® Coffee Maker is a registered trademark of AeroPress, Inc. Prismo is in no way affiliated with or endorsed by AeroPress, Inc. 

The Details:

  • Compatible only with the AeroPress® Coffee Maker
  • Body material – Polypropylene
  • Valve material – Silicone
  • Reusable 70 micron etched fine stainless steel filter.
  • Integrated gasket – prevents your brew from leaking over the sides.
  • 2.75″ diameter, 1″ tall
  • Utility Belt of Recipes: espresso-style coffee, full immersion, Americano, cold brew, hot tea, iced tea, and more!
  • Why call it “espresso-style”? Check out our thoughts here.
  •  AeroPress® Coffee Maker not included

Please do not brew with Prismo over thin glass vessels. Prismo creates a great deal of pressure, and glass is fragile! When in doubt, use a ceramic or metal vessel. Check out our full safety and use instructions here.

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Coffee Grinds Explained

We currently offer 4 different coffee grind levels.  Listed below with descriptions.

Whole Bean: Unground coffee for a home grinder.

Coarse: Think sugar in the raw, maybe more coarse, recommended for Chemex Brewer, French Press, Cold Brew

Medium: Slightly coarser than table salt, recommended for Metal Kone filters, Flat bottom brewers including Kalitta, Cloth filters

Fine:  Slightly finer than table salt, recommended for V60 pour overs, Cone filter coffee pots, Moka Pot, Aeropress.

Extra Fine: Like powdered sugar, recommended for Espresso.

If at all possible, we recommend grinding at home. We prefer Baratza coffee grinders and offer several of their models for sale. Click here to shop for one of their brewers.