Cold foam is cold nonfat milk plus 30 seconds of shear. The science of why it works, three no-gear methods,...

Scale comes from your water, not the calendar. How to tell whether your espresso machine really needs descaling, what it...

A Written V60 Recipe You Can Actually Follow

A written V60 recipe you can follow with wet hands: 20g coffee, 320g water, two pours, done by 3:00. Plus...

The Best Water for Coffee, Minus the Chemistry Degree

Water is most of your cup. What the Bath mineral study means for flavor, the SCA numbers in plain words,...

Too fresh? Why resting coffee matters

Fresh coffee that gushes and tastes sour is often too fresh. Here is how long to rest your beans by...

How to store coffee beans (and when the freezer wins)

Where to store coffee beans to keep them fresh, when the freezer beats the counter, and how to freeze the...

Dial In a New Bag in Three Shots, Not Ten

Skip the ten-shot slog. Lock the recipe at 18 grams in and 36 out, read sour or bitter, and move...

Coffee-to-Water Ratios Without the Dogma

The 1:16 starting point, what 1:15 vs 1:17 changes in the cup, and why UC Davis found there is no...

Coffee Extraction vs. Strength: The Two Dials Behind Every Cup

Strength is how concentrated your cup is. Extraction is what water pulled from the grounds. Master these two dials and...

Espresso Sour or Bitter? Fix Your Shot by Taste

Sour and bitter espresso have opposite causes. Learn to tell them apart in one sip, then fix your shot with...