What does "mouse" refer to in the context of milk frothing?

In the context of milk frothing, "mouse" refers to the microfoam that adds creaminess to the texture of steamed milk. Microfoam is created when air is incorporated into the milk, resulting in tiny, fine bubbles that create a smooth and velvety texture. This is particularly important for crafting quality espresso drinks like lattes and cappuccinos, where the milk's creaminess contributes to the overall mouthfeel and flavor profile of the beverage.

Microfoam is characterized by its ability to cling to the espresso, forming a union of flavors that is visually appealing and enhances the drinking experience. Unlike coarser bubbles that may create a foamy layer on top of the milk, microfoam provides a seamless integration with the espresso, allowing for latte art and a richer taste.

Other options, such as the bubbles created in milk or the temperature of the milk, do not accurately capture the specific term "mouse" as used in professional barista language, and the type of milk used refers to the variety of milk selected (whole, skim, alternatives), not the quality of froth produced.