What ingredient is typically used in a chai latte?

The primary ingredient in a chai latte is chai tea, which is a blend of black tea with various spices such as cinnamon, cardamom, ginger, and cloves. This spiced tea provides the base flavor for the chai latte and is typically combined with steamed milk to create a creamy and aromatic beverage. The presence of the spices not only adds complexity to the drink but also contributes to its unique warmth and character, distinguishing it from other lattes that may use different bases or flavorings.

In contrast, other options do not align with the typical construction of a chai latte. Coffee grounds would be associated with coffee drinks, chocolate syrup is used in different dessert-inspired beverages, and fruit puree does not fit into the traditional spice profile of a chai latte. Thus, chai tea being the correct answer highlights its essential role in defining the drink's identity.