Espresso is a black coffee made in a coffee machine or a special coffee machine where hot water at a pressure of 9 bar is passed through the compressed ground beans. The ready beverage must have a thick foam (barista called cream) of uniform golden-nut color, at least 2 mm thick. The taste of the espresso harmonises sweetness, bitterness and light acidity. Shades of taste depend on the coffee beans in the blend, roasting degree and barista skills.
The home of the drink is Italy. Espresso is prepared very quickly and drinks just as quickly. It has several options and serves as the basis for many other coffee beverages.