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What's your favorite way to brew iced coffee in a Chemex? (programming.dev)

submitted 1 year ago by [email protected] to c/[email protected]

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Typically I'd make a pour over or espresso, but my A/C is out and I can't even think about hot coffee. What is your favorite way to make iced coffee in a Chemex? I've got light roasts from Costa Rica, Burundi, and Ethiopia right now.

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[–] [email protected] 7 points 1 year ago (6 children)

Japanese iced coffee!

Take half your total pour over water weight and put that amount of ice in the bottom of the Chemex.
Grind the usual amount of coffee for your Chemex brew.
Brew with whatever method you usually do but half the water weight for each pour (so you end up with the same amount of water as usual when you add the ice)

Instantly cold but full strength because the ice doesn't water it down when it melts!

[–] [email protected] 2 points 1 year ago* (last edited 1 year ago) (5 children)

Thanks for the tip! I tried this and ended up with an uneven extraction and slightly bitter cup—although that may be more due to the ratio than the brewing method. I typically brew pour overs at 1:17, but the recipe I found online was 1:4:7 ratio (48g coffee to 212g ice and 340g water). Since coffee extraction is non-linear, I don't understand how brewing with half the hot water yields the same extraction (based on the dynamics of coffee extraction). What brewing ratio worked produces a more balanced cup for you?

EDIT: I should add I ground medium-sized (3 on a Fellow Ode Gen 1) and used 99° C water.

[–] [email protected] 3 points 1 year ago (2 children)

I follow James Hoffmann's Japanese iced coffee recipe for V60 which for me yields a sweet, fruit tea-like cup with light roasts.

Tetsu Kasuya's recipe of stuffing the brewer full of ice cubes and slowly letting them melt over the grounds would be hella fun to try though...

[–] [email protected] 3 points 1 year ago* (last edited 1 year ago)

I'd also recommend Hoffman's method, I grind quite a lot finer than I normally do, use closer to 1/11, and bloom for about a minute plus a slower pour.
Also I hold back 2-3 ice cubes and put them directly in my cup after serving. So instead of getting a lot of small almost melted cubes you have a few big ones making it nicer to drink.

I believe it's because I mostly drink delicate light roasted Ethiopian coffees that are a bit harder to extract for ice coffee.

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