Orange liqueur is a category of spirits flavored with orange zest and sometimes juice, sweetened and typically bottled around 15-40% ABV; the best-known examples are the triple sec/Curaçao family, including Cointreau and Grand Marnier. It is distinct from orange-flavored bitter aperitifs such as Campari and Aperol, which are lower-proof, more bitter, and meant to be sipped before a meal rather than used mainly as a baking or cocktail ingredient. Orange liqueur is a staple of classic cocktails like the Margarita and Cosmopolitan, and in the kitchen it adds depth to desserts, sauces, and marinades, pairing especially well with chocolate, nuts, and other citrus. In savory cooking it is often combined with soy sauce, honey, or vinegar to balance sweet, sour, and umami flavors in a glaze.