Which drink includes steamed milk as a key component?

The drink that includes steamed milk as a key component is the green tea latte. This beverage is typically made by combining matcha green tea powder with steamed milk, which gives it a creamy texture and rich flavor. The process of steaming the milk not only enhances the drink's taste but also creates a pleasant visual appeal with its frothy top. In contrast, espresso and regular coffee are brewed coffee drinks without any added milk, and black tea is served as a steeped infusion that does not involve steamed milk as an ingredient. Therefore, the inclusion of steamed milk is a defining characteristic of a green tea latte, making it the correct answer.