Why Is My Espresso Sour
Sour, lemony espresso means under-extraction: grind too coarse, shot too fast, or yield too high. It's the most common beginner problem and easy to fix.
Our top pick
Grinder
Finer fixes sourness.
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Editorial note: this guide is compiled from published manufacturer guidance, general best practices, and aggregated owner experience — not hands-on testing. Always follow your machine’s official manual.
Quick comparison
| Pick | Why we like it | |
|---|---|---|
| Grinder | Finer fixes sourness. | View → |
| Scale | Check yield/time. | View → |
| Espresso Machine | Temp adjust if needed. | View → |
Grinder
Editor’s PickFiner fixes sourness.
- + Espresso
- + Precise
- − Noisy
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Temp adjust if needed.
- + PID
- + Fast
- − Cost
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Buying advice
Grind one notch finer, keep dose 18 g, target 36 g out in ~28s. If still sour, lower yield or raise temp 2F.
FAQ
Top cause?
Grind too coarse.
Time too short?
Under 20s often sours.
Beans too light?
Very light roasts can taste bright - not 'bad'.
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