Using a Chemex is an easy and convenient way to brew excellent coffee at home. The keys to getting good results are: using high quality, fresh beans; grinding the coffee correctly; using clean equipment; pouring correctly; using the right amount and temperature of water.
You’ll need a Chemex brewer, coffee, a Chemex filter, a grinder, and a mug for your coffee.
These guides serve as a good place to start. The grinder you use, coffee you choose, and yes, even the water from your sink, can alter the taste in the cup. Every machine is different, so you’ll want to think of these parameters more as guidelines than law. Play around with your machine and brewing parameters to get each coffee to taste just how you like it.
Grind 56 grams (about 8 Tablespoons) for the 8-cup French press. The ground coffee should be about as coarse as breadcrumbs. Preheat the glass and plunger by pouring hot water inside the pitcher and plunge once to warm everything up. Discard the rinse water.
BARISTA TIP: Make sure you start with a clean French press. Old coffee grounds stuck in the wire plunger will not serve you well!
Next, pour hot water (30 seconds off the boil or about 205 degrees F) into the French press, saturating all of your grounds, and pouring to the halfway mark. Start your timer for 4 minutes.
After 1 minute, stir the “bloom” (or top layer) and pour the rest of the water evenly to the top and affix the press pot lid.
After the 4 minute timer goes off, plunge and serve.
BARISTA TIP: Be sure you pour your coffee into serving cups or a carafe right away because if you leave the coffee sitting on top of the grounds, it will keep extracting and get stronger and sludgier by the time you are ready for your second cup.