Réserve de la Famille was until recently reserved strictly for the Delamain family and guests. Its defining feature is that it is not a blend but a single-estate bottling from one barrel aged for 60 years, the maximum period over which a Cognac can improve in cask. Like most Cognac houses, Delamain does not grow grapes but instead purchases eaux-de-vie from trusted grower/distillers who offer their finest spirits for evaluation after each harvest. The selected single-estate spirits are aged in old, 350-liter oak barrels called roux, then bottled without blending. This single-estate Cognac allows the connoisseur to experience the unique qualities of the vineyards and the color, intense aromas and concentration imparted by the longest period of cask aging.