The slow and natural ageing in oak casks develops the aromas, flavors and colors of Hennessy cognacs.

While ageing, the eaux-de-vie lose some of their strength and volume. Each year, about 2 % evaporates from the barrels. In Cognac this is dubbed 'the Angels’ Share'. Evaporation eliminates the very volatile substances, leaving those that give the eaux-de-vie their bouquet.

A great Hennessy cognac is the result of many eaux-de-vie of different origins and ages, and with various characteristics, that are assembled over time by our master blender.