Orvieto is a DOC wine whose production is allowed in the provinces of Terni and Viterbo, in an area considered to be the oldest enoic territory of Umbria. The main vines that contribute to the production of Orvieto are the Tuscan Trebbiano, also called Procanico, which is accompanied by the Grechetto for a minimum of 60%, in the remaining 40% the white vines allowed in Umbria and in the province of Viterbo can be used.