Grand Marnier is a popular orange liqueur made in France from a blend of French cognac and bitter orange liqueur. That familiar bottle that adorns bars worldwide is technically called Cordon Rouge, though it's most often simply called Grand Marnier. It is the best-known French liqueur on the market and among the top choices for orange liqueurs in the world. Grand Marnier is a brilliant cocktail ingredient and it offers a smooth citrus taste when drunk on its own.