Which of the following flavors is not associated with Kahlua?

Kahlua is a coffee-flavored liqueur from Mexico that is primarily recognized for its rich and robust coffee flavor. The primary flavors associated with Kahlua are indeed coffee, vanilla, and chocolate, reflecting its base ingredients and the profile of the drink.

While it may offer a touch of sweetness and other subtler flavors, hazelnut is not one of the main flavor characteristics of Kahlua. Instead, hazelnut is often associated with other liqueurs, such as Frangelico, which is specifically flavored with hazelnut. This distinction in flavor profiles helps clarify why hazelnut is not linked with Kahlua, corroborating the choice made in answer to the question.