A Doppio, which simply means “double” in Italian, is a double shot of espresso. It is the standard espresso size in many coffee shops around the world, offering a more substantial and potent coffee experience compared to a single shot (solo).
While a single espresso is the norm in Italy, the Doppio has become the de facto standard for espresso-based drinks in the United States and many other countries. If you order a “latte” or “cappuccino,” it’s almost always made with a doppio.