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Barista Accessories

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Why Sour Espresso Happens and How to Adjust Your Brew

Why Sour Espresso Happens and How to Adjust Your Brew

Sour espresso often points to under-extraction, but coffee freshness, roast level, water, and equipment can affect flavor too. Use a measured adjustment process to identify likely cause without changing several variables at once.

Nadia Okafor Oct 15, 2026