How many sizes are available for espresso?

Espresso is typically available in two sizes, which are often referred to as single and double shots. A single shot typically contains about 1 ounce of espresso, while a double shot contains around 2 ounces. This variety allows customers to choose the strength and flavor concentration they desire. Singles are usually used for lighter or less intense coffee drinks, while doubles are more common for those looking for a richer espresso experience, making the two-size option practical and popular in coffee shops. Other sizes, such as a triple shot, do exist but are less standard and not commonly offered on menus, which supports the choice of two as the main sizes available.