Chemex (6-cup)

Bonded filters roughly three times the thickness of a V60 paper. Strips oils and fines out entirely - the cleanest, most tea-like cup in coffee, and the one that punishes a fine grind hardest.

Roast	Grind	Coffee	Water	Time
light	medium-coarse	11 g	180 ml	4:30
medium	medium-coarse	11 g	180 ml	4:15
dark	coarse	10 g	180 ml	4:00

Per 180 ml cup. Makes 2–5 at a time.

What goes wrong

Skipping the filter rinse (papery taste, cardboard), grinding as fine as for a V60 (stalls, bitter), sealing the triple fold against the spout (blocks the air channel and the brew backs up)

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.

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 full procedure is in the app, along with a reminder when this is next due. Add the Chemex (6-cup) to your shelf and it keeps track.

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Chemex (6-cup)

Chemex (6-cup)

What goes wrong

Care schedule

Wash the carafe properly

What you need

What goes wrong

The procedure

What it makes