The Brew Blog

An architecture guide to espresso machines: single boiler, heat exchanger, dual boiler, thermoblock, pump types, and what each trade-off means for your cup.

Grind size for coffee: the complete reference for every brewing method, from espresso to cold brew. Get the right grind for V60, Chemex, AeroPress, and more.

Coffee grind particle distribution explained: why fines and boulders ruin extraction, how to test your grinder, and why burr grinders beat blade every time.

Best grind size for pour over coffee is medium-fine, like fine sea salt. Complete dial-in guide for V60, Kalita, and Origami, plus how to adjust by roast.

Best grind size for Chemex is medium-coarse, distinctly coarser than V60. Why thick bonded filters need it, how to dial in, and common Chemex mistakes.

Best grind size for moka pot is fine-medium, not espresso. Why a Bialetti needs coarser grind than espresso machines and how to avoid bitter, scorched coffee.