The proper sized cup for a cappuccino is typically a six-ounce demitasse cup. This cup size is designed to hold the perfect balance of espresso, steamed milk, and foam, allowing you to enjoy the full flavor of the cappuccino without it becoming watered down. Additionally, the small size helps to keep the drink warm for longer. Keep in mind that the size of the cup may vary depending on the recipe and personal preference. For more information on cup suitability, don't miss our detailed look at standard coffee cup sizes.