Tuning tipSour? Grind finer. Bitter? Grind coarser.

The Tuned Cup

Basics · the low string

Adjust

What the grind changes in the cup, and what to do when the grinder won't cooperate.

Still tuning this one.

Adjust: those guides are on the bench right now. Until they're ready, these ones are in tune.

Or tell the finder what's off

Still out of tune?

Tell us what's off — sour — and we'll find the fix.

    What's wrong with your coffee?