Which grape variety is most commonly associated with the Loire Valley?

Sauvignon Blanc is the grape variety most commonly associated with the Loire Valley due to its prominent cultivation and historical significance in the region. The Loire Valley is renowned for producing some of the finest Sauvignon Blanc wines, particularly from specific areas such as Sancerre and Pouilly-Fumé. These wines are celebrated for their vibrant acidity, distinct aromatic profiles, and freshness, which are characteristic of the grape.

Other varieties mentioned, like Chardonnay, are indeed grown in the Loire Valley but do not reflect the region's signature style in the same way as Sauvignon Blanc. Pinot Grigio is more commonly associated with Italian wines, and while Riesling has some presence in France, it is far less prevalent in the Loire Valley compared to Sauvignon Blanc. Thus, the association of Sauvignon Blanc with the Loire Valley is well-established in both consumer awareness and wine production standards.