sentences:  The defined area also includes areas around Giano dell'Umbria, Bevagna, Gualdo Cattaneo and Castel Ritaldi.The wine must be aged for a minimum of 37 months, of which at least 12 months must be in oak barrels.The combination of the very thick-skinned sagrantino grape and the long aging time in oak produces a typically very dense, full-bodied wine, with a very high tannin content.