Cointreau Posted on 22 August, 201615 February, 2017 by Jay Hung Product A trademarked brand name for a popular orange-flavored liqueur, made in the style of triple sec. According to its producers, Cointreau was first created in 1849. Related Links: Cointreau Popular cocktails made with Cointreau: Cosmopolitan Cocktail Recipe Margarita Recipe Sidecar Recipe Moonlight Cocktail Related Lingo: liqueur blue curaçao