Cointreau is flavored with which fruit?

Cointreau is a type of triple sec liqueur that is predominantly flavored with orange. It is made using a blend of sweet and bitter orange peels, which gives it a distinctive citrus flavor that is both aromatic and refreshing. This unique combination is what sets Cointreau apart as a premium orange liqueur, making it a popular choice in various cocktails, including the classic Margarita and Cosmopolitan.

In the context of the other choices, while cherry, lemon, and pineapple are all used in various liqueurs and drinks, they are not the flavor profile associated with Cointreau. Cherry is more commonly linked to liqueurs such as Kirsch or Maraschino, lemon can be found in limoncello, and pineapple is often associated with tropical drinks and rums. Thus, the distinctive focus on orange makes Cointreau unique within the realm of flavored liqueurs.