Which grape variety is primarily used for Prosecco DOC?

The primary grape variety used for Prosecco DOC is Glera. This indigenous grape is crucial in the production of Prosecco, contributing to its distinctive characteristics, such as the fragrant notes of apple, pear, and floral elements that are often found in the wine. Glera also has the ability to retain acidity, which is essential for creating the fresh and crisp style that Prosecco is known for.

While other grape varieties, such as Chardonnay and Pinot Noir, can be used in sparkling wines, they are not the main component of Prosecco DOC. Muscat, known for its aromatic qualities, is also not a primary variety in Prosecco production. Therefore, Glera is the correct answer as it is the cornerstone of this popular Italian sparkling wine.