Chemex Coffee Maker

Cleaning a Chemex is simple. After brewing, remove and discard the used filter. Rinse the glass carafe with warm water—no soap needed for daily cleaning. For deeper cleaning, use warm water with a small amount of dish soap and a soft bottle brush. The Chemex is also dishwasher safe. Avoid temperature shock by letting it cool before washing.

Use authentic Chemex bonded filters for best results—they're 20-30% heavier than standard filters and specially designed to remove oils and sediment for the cleanest cup. Chemex offers bleached (white) and unbleached (natural) options. Standard cone filters won't fit properly and will compromise your brew quality.

Chemex filters come pre-folded into quarters. Unfold to create a cone, with the triple-layered side facing the spout and the single layer on the opposite side. This design allows air to escape during brewing so the filter doesn't collapse against the glass.

The standard ratio is 1g of coffee to 15-17g of water. For a 3-cup Chemex, use 20-25g of coffee; for a 6-cup, use 40-45g; for an 8-cup, use 55-60g. Adjust to taste—use more coffee for a stronger brew or less for a lighter cup.

Use a medium-coarse grind for Chemex, similar to sea salt texture. This grind size allows proper extraction through the thick Chemex filters without over-extraction or clogging. Grinding too fine will result in bitter, over-extracted coffee and slow brew times, while too coarse will produce weak, under-extracted coffee.