Cognac X.O. and Napoleon

In 1870 Hennessy was the first to use the age designation "XO". Even though the youngest blend in an XO Cognac can be as young as ten years, an XO usually has an average age of between 15 and 20 years, sometimes older. An XO Cognac can also be called “Old Réserve” or "Vieille Réserve". "Napoleon" Cognac is comparable to XO quality, meaning the youngest eau-de-vie in the ...