Triple Sec is a clear, orange-flavored liqueur made from the dried peels of bitter and sweet oranges. In the context of alcohol and cocktails, triple sec is a versatile and essential ingredient that adds a bright, citrusy note. It is commonly used in a wide range of cocktails, including classics like the Margarita, Cosmopolitan, and Sidecar. Triple sec pairs well with virtually any spirit, from tequila and vodka to rum and brandy. Its sweet, orange flavor enhances both fruity and sour drinks, making it a staple in many cocktail recipes.