Short Black is coffee brewed by forcing a small amount of nearly boiling water under pressure through finely ground coffee beans. Short Black is generally thicker than coffee brewed by other methods, has a higher concentration of suspended and dissolved solids, and has crema on top (a foam with a creamy consistency). As a result of the pressurized brewing process, the flavors and chemicals in a typical cup of espresso are very concentrated. Short Black is the base for other drinks, such as a caffè latte, cappuccino, caffè macchiato, cafe mocha, or caffè Americano. Short Black has more caffeine per unit volume than most beverages, but the usual serving size is smaller—a typical 60 mL of espresso has 80 to 150 mg of caffeine, a little less than the 95 to 200 mg of a standard 240 mL cup of drip-brewed coffee.