Why Your Coffee Tastes Sour (And How to Fix It Fast)

Why Your Coffee Tastes Sour (And How to Fix It Fast)

Sour coffee isn’t random. It’s a signal.

What’s actually happening
Your coffee is under-extracted. Water didn’t pull enough flavor out of the grounds.

Common causes

  • Grind is too coarse
  • Brew time is too short
  • Water isn’t hot enough

How to fix it

  • Grind finer
  • Extend brew time slightly
  • Make sure your water is hot (around 195–205°F)

Quick test
If your coffee tastes sharp, thin, or almost salty, you’re under-extracting.

Bottom line
Sour = not enough extraction. Adjust your grind first.

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