Which beverage is served chilled and contains espresso?

The beverage that is served chilled and contains espresso is indeed the Starbucks Doubleshot on Ice. This drink is specifically designed to be enjoyed cold, featuring a combination of espresso and milk, along with ice. It provides a refreshing option for those seeking a coffee beverage with a robust espresso flavor, balanced by the creaminess of milk.

The Starbucks Doubleshot on Ice is distinctive in that it is crafted with freshly made espresso, which is then chilled and served over ice, distinguishing it from other espresso-based drinks that may typically be served hot or warm. This makes it a popular choice among customers who enjoy a cold coffee experience.

In contrast, the Flat White is a warm beverage that emphasizes espresso with microfoam milk, making it unsuitable for this question. The Chai Latte is a spiced tea drink that does not contain espresso at all, and Mint Brew is not a standard Starbucks coffee offering and does not feature espresso either.