1. Prep and Preheat
Insert the Chemex filter with the single fold away from the spout and the multiple folds against it. Rinse the filter with hot water to seal it and remove any paper taste and pre-heat the glass. Discard the rinse water, then fold the filter toward the spout for reinforcement.
2. Weigh and Grind Coffee
Measure 42 grams of coffee and grind it to a texture similar to kosher salt. Place the coffee in the Chemex and zero out your scale.
3. Saturate the Grounds
Start your timer and pour hot water (about 95°C) over the grounds until they are fully saturated, reaching approximately 150 grams. Stir gently to ensure there are no dry clumps.
4. Add More Water
At the 45-second mark, begin the second pour. Use a wiggling motion, then switch to a gentle spiral until the water level is about a fingertip below the rim, roughly 450 grams. Focus on pouring over the darker spots, avoiding lighter areas.
5. Fill to the Top
At 1:45, fill the Chemex to the top or until you reach about 700 grams of water. This ensures all grounds are fully immersed.
6. Wait for It to Brew
Around the 4-minute mark, the coffee should be near the desired volume. Check the glass bubble indicator for 600 milliliters. Lift the filter slightly to let any remaining water drain, then remove it and discard.
7. Serve and Enjoy
Swirl the Chemex to mix the brew, and pour into cups. Enjoy your freshly brewed coffee!