How to identify a good Italian espresso by coffee technology

Esdivs-so, Italian for "extraordinary speed."

Italian espresso is tasted in a small cup, preferably in three sips. When drinking, do not add sugar and milk, pure taste among them.

What makes a good espresso? Three main elements need to be examined: First, perfect Italian espresso, the surface will be covered with a layer of rich red crema (is the dark brown foam on the coffee surface, containing the key aroma molecules in the coffee); Second, good Italian espresso after drinking the cup will remain Chunyu aroma; Third, observe the degree of crema "hanging cup"(residual on the cup wall). Hanging cup is a good Italian espresso, in foreign countries, if there is no "hanging cup" can refuse to pay.