According to the DOC regulations 60% of the grapes used for the blend must be Grechetto and Procanico.
Grechetto is a ancient grape variety, with thick skin resistant to rot. In the wine it brings a good acidity and a floral bouquet. At the palate the finish is typically nutty.
Procanico is a clone of Tuscan Trebbiano, once a very important grape for the Denomination. Today Grechetto is widely used, however Procanico provides production continuity, acidity and a delicate floral and fruity aromas.
Verdello is no longer part of the Doc regulations, although it was once broadly used. The lack of a real identity has relegated Verdello to a secondary role.
It brings acidity and a good structure, although the nose remains neutral and deprived of a real identity.