How is a flat white made and what are the key steps involved in preparing this popular coffee beverage?

A flat white is made by pouring velvety steamed milk over a shot of espresso. The key steps involved in preparing a flat white include extracting a shot of espresso, steaming milk to create a smooth microfoam, pouring the milk over the espresso in a specific way to create a balanced flavor, and finishing with latte art if desired.