What is the main grape variety used in Sancerre wines?

Sancerre wines are predominantly made from the Sauvignon Blanc grape variety. This white wine region is situated in the Loire Valley of France, where the terroir, including its limestone and chalky soils, uniquely influences the characteristics of Sauvignon Blanc. The wines produced in Sancerre are known for their high acidity, vibrant citrus and green fruit flavors, and herbaceous notes, which are hallmark traits of the Sauvignon Blanc grape.

While Chenin Blanc, Gamay, and Cabernet Franc are significant varieties in other French wine regions, they do not play a principal role in the production of Sancerre wines. Chenin Blanc, for example, is primarily associated with the Anjou and Vouvray regions, Gamay is prominent in Beaujolais, while Cabernet Franc is commonly found in the Loire Valley, notably in regions like Chinon and Bourgueil.