François Thibault, creator of Grey Goose, uses his years of experience as cognac Maitre de Chai. In creating Grey Goose VX he added aromatic notes of a precious brandy. The exact ratio is 95% vodka and 5% cognac. The "VX" in the name stands for 'vodka exceptionelle', because the vodka contains cognac, which is produced exclusively from grapes from the Grande Champagne Cognac region.