What grape is predominantly used for the sparkling wine Asti?

The grape predominantly used for the sparkling wine Asti is Moscato. This grape, also known as Muscat, is renowned for its fragrant floral and fruity aromas, which contribute to the wine's distinctive sweet and aromatic profile.

Asti is primarily produced in the Piedmont region of Italy, where Moscato grapes thrive. The wine is made using the Charmat method, which involves fermenting the wine in large pressurized tanks to retain the fresh fruity characteristics and fine bubbles that are typical of sparkling wines. The sweetness of Asti, complemented by its lower alcohol content, makes it a popular choice for many consumers, enhancing the appeal of Moscato in this unique style of sparkling wine.

Additionally, Moscato's versatility allows it to express a wide range of flavors, including notes of peach, apricot, and orange blossom, further enriching the drinking experience offered by Asti. The other grape varieties mentioned, such as Nebbiolo, Barbera, and Dolcetto, are primarily used for producing still red wines in the region, which showcases the specific importance and uniqueness of Moscato in the context of Asti sparkling wine.