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. Taste: The palate is wonderfully rounded and spiced delicately. The length on the palate exceeds expectations. Appearance: A sensual shade of ruby tinged amber. Aroma: An expressive nose of bitter orange. freshly grated nutmeg. notes of bitter orange. licorice and peppermint leaf.