Which beverage is known as a blackout?

The beverage known as a blackout is the hazelnut mocha. This drink is characterized by its rich blend of espresso and steamed milk, combined with chocolate sauce, hazelnut syrup, and typically topped with whipped cream. The term "blackout" often refers to the intense combination of flavors and the deep, dark color of the espresso and chocolate mixture, creating a bold experience for coffee enthusiasts.

In contrast, the other beverages listed do not embody the specific qualities or flavor profile associated with a blackout drink. A vanilla latte is softer and sweeter, primarily emphasizing vanilla flavor, while a caramel frappuccino is typically creamy and cold, focusing on caramel sweetness. Iced coffee offers a refreshing option but lacks the rich, bold characteristics that define a blackout beverage.