Chemex (8-cup)

The Chemex for when people are over. Same filter, same clarity, deeper bed, longer brew. Closer to a project than a cup of coffee.

Roast	Grind	Coffee	Water	Time
light	medium-coarse	11 g	180 ml	5:30
medium	medium-coarse	11 g	180 ml	5:15
dark	coarse	10 g	180 ml	4:55

Per 180 ml cup. Makes 4–8 at a time.

What goes wrong

Brewing under 700ml in it. The bed sits thin against a large filter: weak and hollow. A short bloom on a deep bed extracts unevenly. Not preheating the carafe, so it is lukewarm by the time you pour.

Care schedule

1 task for this machine.

Wash the carafe properly

Weekly

Coffee leaves a brown film on glass and a duller one on steel. It is not a stain, it is oil, and it goes rancid - a thermal jug that has never been properly cleaned adds a stale note to everything poured into it.

What you need

A long-handled brush. Bicarbonate of soda, an oxygenated cleaner such as Cafiza, or a denture tablet. Hot water.

Cafiza cleaning powderAd

What goes wrong

Leaving the pot on the hot plate to dry out, which bakes the film on hard. Cleaning the jug and never the lid. Dishwashing an insulated jug. Taking a scourer to glass and leaving scratches that hold more oil than before.

The procedure

Rinse with hot water after every pot, before the oil dries. That is 90 percent of the job.

5 more steps

The rest is in the app, with a reminder when it is next due.

Get the app