Fixing Sour Coffee: Three Quick Moves

If your coffee tastes sour, here's the thing I tell everyone: it's almost always under-extraction — the cup is thin and sharp, like the coffee never got a fair chance. Three moves fix most of it.

Moves

Grind finer, raise water temperature a few degrees, or extend brew time slightly. Change one at a time.

One last thing

None of this is secret lab science. Sour-and-bitter fixes are the first thing every barista learns, and the numbers above are just the common ranges I keep coming back to. Your tongue beats any chart — trust it, then nudge one thing at a time.