Hennessy X.O is a premium cognac produced by the Hennessy brand, known for its rich and complex flavor profile. Launched in 1870, it is a blend of over 100 different eaux-de-vie, aged between 10 to 30 years. The "X.O" stands for "Extra Old," indicating its high quality and maturity. The tasting notes of Hennessy X.O include rich flavors of chocolate, spices, and dried fruits, complemented by a smooth finish. It is often enjoyed neat or on the rocks, making it a popular choice for connoisseurs and special occasions alike.