What is the primary indicator that microfoam has been successfully created?

The primary indicator that microfoam has been successfully created is that it is glossy and smooth. Microfoam is a specific type of steamed milk that is characterized by its fine, velvety texture and glossy appearance. This quality is achieved by incorporating tiny, uniform bubbles into the milk, resulting in a dense and creamy foam that integrates well with espresso. The smoothness is crucial, as it allows for superior latte art and enhances the overall mouthfeel of the beverage.

When properly frothed, microfoam should not have large bubbles or a watery consistency, which would compromise its texture. Instead, it should create a glossy sheen on the surface, indicating that the air has been properly integrated into the milk. This smooth and glossy finish is also essential for creating a beautiful visual presentation in drinks like lattes and cappuccinos.