What unique feature does an Espresso Macchiato have?

The Espresso Macchiato's unique feature is that it is topped with a small amount of foam. This drink consists primarily of a shot of espresso that is "marked" or "stained" with a small quantity of foamed milk. The purpose of this slight amount of foam is to enhance the espresso flavor while providing a creamy texture, distinguishing it from other espresso-based drinks that may include larger volumes of milk or additional sweeteners.

In contrast, while cold milk or ice might be used in other beverages, they do not characterize an Espresso Macchiato. Additionally, whipped cream is typically reserved for drinks such as a Frappuccino or other espresso drinks, rather than a traditional macchiato, which emphasizes simplicity and balance between the coffee and the dairy component.