The term 'espresso measurement' can be summarized as a SHOT, which is a four-letter word. A SHOT of espresso is a single serving of the beverage, usually between 1 and 2 ounces. It is made by forcing hot water through finely ground coffee beans at high pressure. The resulting drink is strong and concentrated, with a thick layer of crema on top. Espresso shots are often used as the base for other coffee drinks, such as lattes and cappuccinos.