Martell X.O is round and fruity, fine and powerful cognac with a long and silky final note. Its unique arch-shaped bottle is a powerful symbol of vision and inspiration which bears testimony to Jean Martell’s commitment to excellence. Martell X.O combines the elegance of Borderies eaux-de-vie with the intensity of the Champagnes eaux-de-vies. ItÂ’s an outstanding X.O bearing the hallmark of the Martell style. Martell, the oldest of the great cognac houses was founded in 1715 at the height of French Art de Vivre; a philosophy embracing creativity, expertise and substance. For 300 years, The House of Martell has instilled this philosophy into its cognac-making, transforming ordinary moments into extraordinary pleasures.