Step 1: Prep and preheat
Place the Chemex Filter in the brewer with single fold away from the spout and multiple folds lined up against the spout. Rinse the filter with hot water to get a nice even seal all the way around. This preheats the brewer and gets rid of any paper flavor from the filter. Dump the rinse water and fold the filter toward the spout to reinforce this area.
Step 2: Weigh and grind coffee
Add your coffee, ground kind of like sea salt. Center the coffee in your brewer and zero out the scale.
Step 3: Saturate grounds
Start the timer when you add the hot water. Pour until all the grounds are saturated or until you reach about 90g. Stir with a chopstick or spoon to make sure there are no dry clumps.
Step 4: Add more water
At :45, start the second pour, making sure to reintegrate the coffee and water. Pour in a gentle spiral until the volume reaches about a fingertip down from the top of the rim of water. Pour over the dark spots and avoid the light ones.
Step 5: Fill to the top
At 1:45, fill the brewer to the top or about 700g of water (to the bubble on the glass).
Step 6: Wait for it to brew
At 4:00, you should be pretty close to volume.. Lift the filter. It’s okay to hover for a couple of seconds to make sure you have enough volume. Then pull the filter out completely and let it drain into the sink.