The pinnacle of the Balvenie Triple Cask range, the Balvenie 25 Year Old contains whiskies that have been aged in traditional refill casks, first-fill ex-bourbon barrels and first-fill Oloroso Sherry butts, matured for a minimum of 25 years before finishing for approximately six months in a marrying tun before bottling. While originally a travel exclusive, we are all thrilled this has been made readily available for widespread purchase.