Which ingredient is often added to espresso in a flat white for texture?

A flat white is defined by its velvety texture, which is primarily achieved through the use of microfoam. Microfoam is steamed milk that has been frothed to create a dense, creamy texture with tiny bubbles. This technique allows the milk to blend seamlessly with the espresso, enhancing the overall mouthfeel of the drink. The microfoam is poured over the espresso, creating a smooth and rich experience that is characteristic of a flat white.

While other options like whipped cream, cold milk, or sugar syrup may be used in various coffee drinks, they do not contribute to the distinctive texture associated with a flat white. Whipped cream is much lighter and airy compared to microfoam and is typically used in different types of beverages for a different purpose. Cold milk does not provide the necessary creaminess or warmth found in a flat white, while sugar syrup serves to sweeten rather than texturize the coffee.