What kind of brew is a "flat white"?

A "flat white" is indeed an espresso-based drink with steamed milk. It is characterized by its velvety texture and rich flavor, resulting from the use of microfoam—steamed milk that is textured to create small, fine bubbles. Typically, the flat white consists of a double shot of espresso and a small amount of velvety microfoam poured over the espresso, giving it a higher ratio of coffee to milk compared to other milk-based espresso drinks like lattes.

This distinction highlights its unique preparation and the relationship between coffee and milk. The microfoam is essential for a flat white, as it creates a smooth and silky mouthfeel while maintaining the strong flavor profile of the espresso. In contrast, other options either describe different styles of coffee or do not capture the specific characteristics of the flat white.