Why Is My Coffee Bitter? Causes and Fixes
If you keep asking “why is my coffee bitter?” the short answer is almost always over-extraction — your brew is pulling too much out of the grounds. This guide is for anyone whose home coffee tastes harsh, ashy, or drying and wants a fix, not a lecture. You’ll get five common causes, each with a one-line remedy, plus a quick checklist to run through. In this guide Bitter vs sour: telling them apart Cause 1: over-extraction Cause 2: grind too fine Cause 3: water too hot Cause 4: stale or dark beans Cause 5: dirty equipment A quick fix checklist FAQ Quick answer: Coffee usually tastes bitter because it’s over-extracted — the grind is too fine, the water too hot, or the brew ran too long. Grind a little coarser, cool the water to about 93°C (200°F), and shorten the brew, changing one thing at a time until the harshness lifts. Bitter vs sour: telling them apart Before you fix anything, name the taste, because the answer to why is my ...