Chemex recipe and dial-in guide

Updated

An hourglass carafe with thick bonded paper filters that drain slowly and strip out oils, for a very clean, tea-like cup.

A starting Chemex recipe

This is where Cuplift starts a new Chemex brewer before it knows anything about the coffee. Once you add a bean, the recipe adjusts for roast, process and altitude, then learns from what you taste.

SizeCoffeeWaterRatioGrindTempTarget drawdown
3-cup15g225ml1:15780µm (Coarse)93°C~3:30
6-cup25g375ml1:15840µm (Coarse)93°C~4:30
8-cup33g500ml1:15900µm (Coarse)93°C~5:30
10-cup42g625ml1:15960µm (Coarse)93°C~6:30

Grind is in microns because a click means something different on every grinder. 780µm is about 26 clicks on a Comandante C40. Filter: Bonded Paper (x1).

Steps (3-cup)

  1. Rinse filter
  2. Add 15g coffee
  3. Bloom with 35ml, gentle stir
  4. Pour to 115ml in slow circles by 1:30, at 0:45
  5. Pour to 225ml by 2:30, at 1:30
  6. Drawdown complete by ~3:30

Dialling in a Chemex

The Chemex is a pour-over brewer, which decides which changes are open to you.

  • Time the drawdown. A bed that stalls or gushes is the first thing to fix, because the cup can't be judged on a brew that didn't flow properly.
  • Grind is your main extraction lever — finer to extract more, coarser to extract less.
  • Pour height stands in for contact time: a higher, more energetic pour extracts more.
  • Temperature and water minerals come after, once grind has had its turn.

Whatever the problem, change one thing per brew. The dial-in guide covers the order to fix things in.

Common pour over problems

Recently dialled in on a Chemex

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