Grand Marnier is a French brand of liqueurs. The brand's best-known product is Grand Marnier Cordon Rouge, an orange-flavored liqueur created in 1880 by Alexandre Marnier-Lapostolle. It is made from a blend of Cognac brandy, distilled essence of bitter orange, and sugar, containing 40% alcohol. It is commonly consumed "neat" as a cordial or a digestif, and can be used in mixed drinks and desserts. Popular examples of the latter include crêpes Suzette and crêpes au Grand Marnier.

A liqueur is an alcoholic drink composed of spirits and additional flavorings such as sugar, fruits, herbs, and spices. Often served with or after dessert, they are typically heavily sweetened and un-aged beyond a resting period during production, when necessary, for their flavors to mingle.