X.O. is the flagship Armagnac of the blends. Indeed the whole range has been built around it. The majority of the eaux-de-vie used in the X.O. blend is for 30 years in old oak barrels.
Founded by Pierre Etienne Janneau in 1851, Maison Janneau is one of the main producers that carries out the distillation, ageing and bottling of its production fully in the region of origin, the AOC Armagnac.