Marquis Mario Incisa della Rocchetta in a letter to Veronelli writes that the origins of the wine experiment date back to the years 1921-25, during his period of study in Pisa. Then a guest of the Salviati Dukes in Migliarino, he drank a wine produced from one of their vineyards which brought to mind an old Bordeaux tasted before 1915. After experimenting with various vines he selected the Cabernet grape because it managed to express the bouquet he had fallen in love with and what he was looking for. The choice of land on which to plant fell on Tenuta San Guido due to the characteristics it shares with Graves, in Bordeaux. Graves meaning gravel, like Sassicaia in Tuscany, for morphologically similar soils. Once production began, from 1948 to 1967 Sassicaia was destined only for internal consumption on the estate. A portion of the bottles remained each year to age in the cellar and the marquis soon realized that the wine improved considerably over time. The 1968 vintage was the first to be put on the market, immediately welcomed by the public's enthusiasm. Born as a table wine, passed to IGT wine and then a sub-area of the Bolgheri DOC, with its constant quality it has deserved the primacy of Italian wine from a specific winery to possess a DOC reserved for it, the DOC Bolgheri Sassicaia.