This cognac, as the XO denotes, Extra Old, having been aged 20-35 years. It comes in a magnificent bottle, flat and looking like a combination of an upside-down leaf, a tear drop, and a perfume bottle. Sniff the XO and you won’t encounter any prickly alcohol ester. Courvoisier XO has aroma and flavor of caramel, chocolate, nuts, oak, and orange.