The aging process commences as soon as the young cognac is placed in casks (usually of 400 liters), made of oak from the Limousin forest. Over the years, the alcohol will improve and become more and more refined, due in particular to its oxydation. The time required to age a cognac varies from one growth to another. In each case, however, the process must be allowed to occur slowly and gradually.
Contrary to the wine, the true age of a cognac is measured by the time it has spent in oak. As soon as it is bottled, the cognac will no longer evolve in any way.
At La Grange, the spirit ranges from less than a year old to over a century, all waiting the different stages of blending before being bottled as a finished product.