Grappa di Sassicaia is a distillate of Cabernet Sauvignon and a small percentage of Cabernet Franc pomace from vines within the Tenuta San Guido estate. The fresh marc is soft pressed from the skins immediately following the wine's maceration phase, and distillation begins immediately. Using one of the oldest operating stills in Italy today, the marc is distilled with steam over a three-hour period. After the cauldron is emptied and the cycle is reinitiated, the heads and tails are eliminated so that the heart of the grappa preserves the purest spectrum of primary aromas and flavors. The finished spirit spends four years aging in French oak barriques.