Hennessy X.X.O was first created in 1870 alongside Hennessy x.o, when the master blender Emile Fillioux​ set aside eaux-de-vie with great potential.​ Hennessy x.x.o was such a significant find ​that it has been launched around the world since 1871​. Drawing on the savoir-faire inherited by his family and a five-decade career​ at Maison Hennessy, Yann Fillioux, 7th generation of master blender, decided to re-create Hennessy x.x.o in 2017.​ From eaux-de-vie with great potential.​