Grand Marnier Navan Natural Vanilla Cognac Liqueur 750 MLNavan Vanilla liqueur is part of a new line of liqueurs launched by the "House of Grand Marnier." They are proud of using all natural Madagascar vanilla as opposed to mean vanilla as a result of processed wood. Navan is made with the same neutral spirit and infusion process that Grand Marnier orange liqueur undergoes but this time the main spice is vanilla.