Wikipedia
Drupeggio (also known as Canaiolo bianco) is a white Italian wine grape variety that is grown in the Central Italy wine regions of Tuscany and Orvieto. The grape is often confused for the white Tuscan variety Vernaccia di San Gimignano, which is also known under the synonym Canaiolo bianco and maybe counted as one in the same in field blends.
Drupeggio is a permitted variety in several Denominazione di origine controllata (DOC)s including Orvieto in Umbria where it is usually blended with Trebbiano, Verdello, Grechetto and Malvasia Toscana and in the red and rosé wines of Barco Reale di Carmignano where it can blended with Sangiovese and Cabernet Sauvignon. It is also a permitted variety for use in Vin Santo production but the grape's limited ability to raisin sufficiently for use in straw wine production makes its appearance in these Italian dessert wines very rare.