Three elements of Coffee knowledge making espresso
Last updated 2026-09-29 — 1, the perfect espresso surface is covered with a rich red crema (dark brown coffee oil on the coffee surface, containing coffee key aroma molecules); 2, good espresso will leave a rich aroma in the cup after drinking; 3, observe the degree of crema hanging cup (remaining on the cup wall). Hanging more cups is a good espresso. In foreign countries, you can refuse if you don't hang a cup.
1. The perfect espresso surface is covered with a rich red crema (dark brown coffee oil, containing key aroma molecules of coffee).
2. A good espresso will leave a rich fragrance in the cup after drinking it.
3. Observe the degree of crema hanging cup (remaining on the cup wall).
Hanging more cups is a good espresso. If there is no "hanging cup" abroad, you can refuse to pay the bill!
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