[2] From the Middle Ages to the mid-20th century, the Orvieto region was known for the sweet dessert wine made with the noble rot, Botrytis cinerea.
[2] White Orvieto is composed primarily of Grechetto and Trebbiano and a blend of Malvasia, Drupeggio, Verdello and Canaiolo bianco grapes.
In addition to the traditional grape varieties listed, some Orvieto producers have begun experimenting with non-DOC Vino da Tavola wines made from Riesling and Sauvignon blanc.
[4] Under the Orvieto DOC regulations, wines may contain 40% to 60% Trebbiano Toscano, 15% to 25% Verdello, and up to 20% maximum of Grechetto, Canaiolo bianco (Drupeggio) and/or Malvasia Toscana for the remainder.
[4] The Rosso Orvietano DOC covers the entire Orvieto zone and is used for the blended red wines made from Aleatico, Barbera, Cabernet Franc, Cabernet Sauvignon, Canaiolo, Cesanese, Ciliegiolo, Colorino, Dolcetto, Merlot, Montepulciano, Pinot nero and Sangiovese.