CoffeeSock Reusable Filters


Reusable alternative to paper filters and nylon sacks

I really like my Chemex coffee brewer. However, the Chemex filters are a bit on the pricey side, and in the past I’ve tried a couple of alternatives. Cheap basket filters from the grocery store didn’t fit well, and the resulting coffee was not great. A reusable metal filter worked OK once or twice, but the tiny holes got clogged up. I ended up going back to the official Chemex filters. There was a stretch of time during the summer/early fall when the Chemex filters became unobtainable for less than 4x the normal price, so again I went looking for an alternative. That is when I tried the CoffeeSock, and I don’t think I’ll be going back to paper. The CoffeeSock is a cloth filter made to fit Chemex brewers. It provides great results. I like really strong coffee, and it lets through a lot of the good-tasting oils from the ground but doesn’t let through any bits.

I’ve been using the same filter for a couple of months now and haven’t had any problems with it getting funky. After using it in the morning, and after it has cooled off a bit, I dump the used grounds, rinse it out, and set it out to air dry. In the morning, before using the filter, I set it in my coffee mug and pour some boiling water on it. This serves to warm the filter up and do some extra cleaning. I then take it out of mug, toss the now brownish water, and proceed to brew my coffee. This process is a bit more involved than using paper filters, but I find that it is worth the effort.

-- Clark Case 04/22/21

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