Trebbiano is a group of white grape varieties that are known for their large bunches and late ripening berries. The most common variety of Trebbiano is Trebbiano Toscano, which is used in many Italian wines, particularly in Tuscany. This variety is also known as Ugni Blanc in France, where it is mostly grown in the Cognac region. Trebbiano Toscano is a high-yielding grape that is known for its adaptability to different growing conditions. It is often blended with other varieties, such as Malvasia Bianca, to produce dry whites and sweet wines. Other varieties of Trebbiano include Trebbiano Spoletino, which is found in Umbria, and Trebbiano d'Abruzzo, which is found in the Abruzzo region of Italy.