How should I drink espresso? Why do you shake it before drinking concentrate?

Professional coffee knowledge exchange more coffee bean information please follow the coffee workshop (Wechat official account cafe_style)
When drinking espresso, most of them come with spoons, sugar and water.
Espresso is extracted with hot water and pressure, so in addition to the water-soluble components that will dissolve in water, some fat-soluble ingredients will also be extracted. The water-soluble ingredients are heavy, so they sink below in the form of coffee liquid, while the fat-soluble ingredients float on top in the form of foam. The ingredient of this foam type is crema, which dissolves many ingredients of aroma, consistency and texture. The water-soluble ingredients sunk below are mainly substances that make the tongue feel the taste. In short, crema is responsible for the aroma part, and the extract is responsible for the flavor part.
If you drink directly without stirring, the water-soluble and fat-soluble ingredients will be separated. Stir or shake the ingredients of espresso before drinking, so that you can feel the rich and harmonious flavor and aroma. So espresso must be served with a spoon.
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