What additional ingredient is added to a Hot Mocha Latte aside from espresso and whole milk?

In a Hot Mocha Latte, dark chocolate is the key additional ingredient that gives this drink its signature flavor profile. The combination of espresso, steamed whole milk, and melted dark chocolate creates a rich, creamy texture with a deep chocolate flavor. This contrast enhances the coffee's natural bitterness, resulting in a balanced beverage that appeals to those who enjoy both the robust taste of coffee and the sweetness of chocolate.

In terms of the other options, caramel is typically associated with caramel lattes or frappés, and macadamia or coconut flavors may be used in different specialty drinks but are not standard components of a traditional mocha. Therefore, while those flavors might be delightful additions in other contexts, they do not belong to the classic composition of a Hot Mocha Latte, which centers around the distinctive pairing of espresso and dark chocolate.