Fellow Prismo Attachment for AeroPress Coffee Maker - Enhance Your Manual Coffee Maker to Brew Espresso-Style and No-Drip Immersion Coffees, Reusable Metal Filter

While it might seem expensive for what is essentially a plastic cap, a metal screen, and a pressure valve (similar to a ketchup bottle), the Fellow Prismo is an great upgrade for the Aeropress. Crucially, it offers much better value than Aeropress's own official Flow Control cap while doing the exact same job. Its main purpose is to stop water from dripping through the filter before you press the plunger, allowing for a full immersion brew without the disaster risk of the "inverted method." It works perfectly for this. It fits my Aeropress Clear perfectly, though required a bit more force that the regular cap to screw on tightly due to the rubber seal. It's also easy to clean after, I just rinse it down and let it dry. It also adds some versatility to your filtering options: you can use just the included metal filter for a fuller body, but I personally use it with a paper filter on top to get a much cleaner cup. It handles both easily. Despite the initial price, I use it every single time I brew, making it definitely worth the investment.

I bought this for my partner who has the aeropress and he’s been really liking it. We’re not entirely sure if it actually gives a different flavour or crema but it’s easy to use and leak-proof. The small knob on top may be easy to lose but with regular careful care we’ve been fine. Good quality, fine filter that works well

As far as overpriced coffee widgets go, this one is pretty cheap. It also makes a meaningful difference to the function of the Aeropress, and I can’t imagine not having one now. I use it for making espresso-strength shots with both the metal filter and a paper filter fitted. It gets used two or three times daily. The coffee through this tastes closer to espresso than the stock Aeropress (which tastes like super-strength filter coffee to me). It is just as easy to clean the Prismo as it is to clean the standard Aeropress gubbins, as long as you use a reasonable amount of pressure to compress the grounds into a puck. It also helps if you use both metal and paper filters. Basically, the Prismo seems fine with a quick rinse along with the rest of the Aeropress. I have not had it leak coffee and, for now, I feel confident pouring water into the Aeropress without a mug underneath it as long as the Prismo is fitted. So why is it overpriced? Well, it’s basically the rubber valve out of a ketchup bottle that’s fitted to an adaptor, allowing you to stick it to the bottom of the Aeropress. Oh, and a reusable filter, which softens the blow a little. As it’s based around a valve that everyone else uses as a disposable part, I have very limited hope for its lifespan. You can, of course, not get spares and Fellow who will offer a two year warranty on a kettle won’t offer you a day on this (but that’s in the UK - they’ll give you a year if you’re in the US). I’ll update and apologise if it lasts a reasonable length of time.

Pretty good however you do need to use it with the metal filter it comes with. I wanted to use it with paper filters however it doesnt fit well without the metal filter, its very loose and leaky without it. With it, its a great fit, easy to use, feels sturdy and durable.

The Fellow Prismo Attachment for AeroPress is an excellent product. Bought on the recommendation of a friend, it does a great job of making the AeroPress easier to use, and ensuring a consistently good coffee is the result. It’s also super easy to rinse clean, and has worked well for months now.

If you are an aeropress consumer, this is an interesting gadget to have. For the life of me, I can't really get that espresso like cuppa from this. Maybe I am not grinding the coffee fine enough. But then, I don't have a £200 grinder to get that done. With the regular aeropress grind, this contraption spouts out regular aeropress based coffee, with the oils passed through as you'd expect with metal filters. Where it does add value, however, is in the fact that you no longer need to flip the aeropress, the way most (at least I) do with paper filters to avoid non-extracted water passing through. In fact, you better NOT do it with this, because if you try those shenanigans, it will soak you with a jet of coffee from that valve, because of the initial bit of pressure in the aerorpress container. Also, the metal filter of this thing is a lot finer than regular metal filters, so the oils get through, but there's no fine particles at all. That's a plus. So I do use it every now and then to change up my coffee when I feel like it. But considering that I prefer paper filter aeropress, I could have lived without it. Also, it's a little bit more hassle to clean this compared to paper filters, which I reuse btw for a few times. Or maybe I haven't quite nailed my workflow because I don't use it as much? Okish device then. Claims things I don't think it achieves. But still does give a good cup of coffee when called upon.

This attachment allows me to make my aeropress coffee by the "inverted" method without having to actually invert the device and risk all the usual instability hazards, which is great in our campervan. The metal filter is OK, but I still continue to use paper filters as well. The resulting coffee tastes amazing. Clean up is no harder than it is with the original end piece. If you loosen the filter from the aeropress and slightly withdraw the plunger, you can then remove the filter and cap and expel the grounds in a satisfying puck just as with the original set up. I was very worried that it would be hard to remove after reading all the reviews that said it was very tight fitting to the aeropress, but it is not. It goes on and off perfectly, and I wonder if those other reviewers had a different aeropress model, perhaps slightly smaller than the original version. The only downside to this item is the cost, which seems bonkers for such a small bit of kit, but it looks like it is going to last, and for that reason it fully deserves my 5 star rating.

Clean

I have made coffee with this a couple of time , and it pulls a very good shot of espresso every time, however I use a paper filter along with it, otherwise I will get grounds in my coffee. I will recommend this attachment to every espresso lover ,who have aeropress

In addition to eliminating the need for paper filters and using the inverted method, the taste is in my opinion also slightly improved. Highly recommend! Can not say anything about the longevity of the product as I only had it for a few days. Update: After hundreds of coffees brewed, it still works like a charm. The metal sieve started to bend and deform very slightly under all the pressure and heat. Still completely usable though! Great product.

Overall it is great attachment especially if you like espresso style coffee. The only annoying thing is that putting a stable plunger in means very little amount of water might still escape to the cup. But it still is a huge improvement over original cap. You also get the metal filter that works quite ok and reusable.

It makes really strong and concentrated coffee that tastes great. I grind my beans pretty fine and let them brew for one minute before pushing the plunger in. Cleanup is super easy as it makes a nice puck that usually pops out all in one piece. Very easy to make americanos and iced lattes. Even if you never make espresso with it, the valve on it is worth it to not have to do the inverted method with the regular aeropress filter holder. And the metal filter works great and lets through barely any silt. They should make this for the Aeropress XL