The Aeropress inverted method revisited

The polyester felt filter for the Aeorpress is thick!

The polyester felt filter for the Aeorpress is thick!

Thanks to Steve A, one of the few readers of this blog, I finally got to try the filter medium suggested by the inventor of the Aeropress inverted method. Verdict: Looks like I’m back to Aeropressing.

I was brewing with the inverted method for a while, but using an inferior filter I found from a textile store. There were still some fine grinds that get past the filter, but lesser than the French press. I reverted back to using the French press after a coffee session in Davao with my sangay MindanaoBob, and after that I acquired quite an inventory of French presses of various brands and sizes. But still, the fine grinds at the bottom of the cup that pass through the French press’s metal filter bothers me a bit.

Then I got this filter medium for the hacked Aeropress — a five-micron polyester filter felt from McMaster. Almost no grinds at all, almost as clean as using paper filter, but with all the oils and flavor you can get from the French press. To give you an idea what exactly is this — you asthmatics, or those with asthmatics in the family, if you have a nebulizer at home, there’s a small (smaller than a coin) round filter where the air goes out where you insert the plastic tube; that’s polyester felt.

No need to repeat what Rasqal, the inverted method inventor, has detailed in his blog entry. But I want to emphasize a couple of points …

1 – File enough of the Aeropress’s bayonet mounts so that, with the thick filter medium, the cap locks well with the body. At first I thought just about 1/8” of grip would be good enough. Then when I pressed hard, the cap was disengaged from the body, and it was one hot mess, the water and the grinds spilling all over. So I filed some more, up to a point where I get about half an inch of grip.

2 – In cutting the polyester felt filter, make it slightly bigger than the stock filter paper that comes with the Aeropress. At first I cut exactly same size (didn’t listen to the advice!!!), so I wasted that filter. When putting the cap the inverted way, the filter fell off. I only have the 12×12” filter medium for now, so I wasted one precious filter.

I should order more of this filter. They have 36×36” available and cheap. This filter is reusable. But up to how many times, that I’ll find out.

Kape ta bay!


6 Responses to “The Aeropress inverted method revisited”

  1. Charo on June 28th, 2009 12:04 pm

    Hey way cool! So does the coffee taste even better now? :)

  2. Bobby on June 28th, 2009 12:14 pm

    Looks like! Inverted method for me for now, until I got one of those vac pots like Don Dante has. :D

  3. Mindanao Bob on June 28th, 2009 5:59 pm

    They have vac pots at DCLA. not sure how good they are, but they are cheap. Is the coffee better, do you think?

  4. Bobby on June 29th, 2009 4:28 am

    they have at gaisano cdo, too. prices range in the 3-5k range. i tried at don dante’s. smooth coffee. it’s different, and yummy. we have to try different ways of preparations sometimes. :-)

  5. Mindanao Bob on June 29th, 2009 6:08 pm

    P1500 lang sa DCLA. Barrato kaayo!

  6. Steve A. on June 30th, 2009 1:40 pm

    I’m going to have to go back and try this again now. I only tried the inverted method a few times before getting a press and have been trying to get an equivalent brew from it to no avail. It’s gotten better after reading an article contrary to most others stating that a much coarser grind is needed than the cheap burr grinders of capable of producing. I went back to the blade grinder pulsing it 10 times and the press makes a more palatable concoction but still not up to the aeropress. Thanks for trying out the filter media and posting the results.

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