What is the primary grape used in making Prosecco?

The primary grape used in making Prosecco is Glera. This grape variety is native to the Veneto region in northeastern Italy, where Prosecco is traditionally produced. Glera grapes are recognized for their bright acidity and aromatic qualities, which contribute to the characteristic profile of Prosecco, including its fruity and floral notes.

Unlike the other grape varieties listed, Glera is specifically cultivated for sparkling wine production within this region, making it central to the identity of Prosecco. Chenin Blanc, Sauvignon Blanc, and Riesling are not used in significant quantities for Prosecco; they are associated with different wine styles and regions, primarily noted for their unique characteristics in still wines and other sparkling wines rather than the signature style of Prosecco.