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Trobleshooting your espresso extraction iagram showing the chemical composition of espresso crema gas bubbles and liquid phases

How to Read Crema: Essential Troubleshooting for Espresso Extraction

That golden-brown layer sitting on top of a freshly pulled espresso is more than just decoration. Crema can give you useful clues about your espresso extraction, including freshness, flow and the way your shot was prepared. But reading crema takes a little practice. A thick crema doesn’t automatically mean you’ve made a great espresso, and

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Surprising Reasons Coffee Tastes Sour, and How to Fix It

A sour cup of coffee can be confusing. After all, coffee contains acids, and acidity helps make good coffee lively and interesting. But when acidity becomes sharp or unpleasant, it signals something went wrong during brewing. The most common culprit is under-extraction. What Is Under-Extraction? When you brew coffee, water gradually dissolves different compounds from

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