Remy Martin XO Excellence 12/7 Rémy Martin XO Excellence is composed of eaux-de-vie coming exclusively from the most sought-after vineyards of Cognac: Grande Champagne and Petite Champagne. Such eaux-de-vie offer an exceptional ageing potential and are known as Cognac Fine Champagne. To enjoy the opulence of the blend, XO Excellence should be served straight, at room temperature or even on ice.