In an Iced Vanilla Mocha, what ingredient is combined with espresso and chocolate milk?

In an Iced Vanilla Mocha, the key ingredient that is combined with espresso and chocolate milk is vanilla. This flavor component adds a creamy sweetness that complements the rich flavors of the espresso and chocolate milk, creating a well-rounded beverage experience. Vanilla enhances the overall taste profile and balances the bitterness of the coffee and the sweetness of the chocolate.

The other options do not serve the same purpose in this specific drink. Dark chocolate is typically already incorporated into the chocolate milk, so it does not need to be added separately. Sweetened condensed milk is not a traditional ingredient in this drink; it generally lends a distinct sweetness, but it is not required for a classic Iced Vanilla Mocha. Whipped cream, while a popular topping for various coffee beverages, does not blend into the drink itself but rather adds texture and richness on top. In summary, vanilla is the essential addition that defines the flavor of an Iced Vanilla Mocha.