What region is characterized by producing a variety of white, red, rosé, and sparkling wines, with 80% of white grapes being Sauvignon Blanc?

The Loire Valley is known for its diverse production of white, red, rosé, and sparkling wines, making it one of the most versatile wine regions in France. A significant characteristic of the region is that approximately 80% of the white grapes grown are Sauvignon Blanc, particularly in areas such as Sancerre and Pouilly-Fumé. This grape variety thrives in the unique climate and soil compositions of the Loire Valley, contributing to the region's reputation for high-quality white wines.

This detail highlights the importance of the Loire Valley in the context of French wine production, distinguishing it from other regions such as Bordeaux, which is more famous for its red wines and blends, or the Rhône Valley, which also has a robust production of red wines but is less associated with Sauvignon Blanc as a dominant white varietal. Additionally, though Touraine falls under the broader category of the Loire Valley, it doesn’t capture the full scope of Sauvignon Blanc's prominence compared to other areas within the Loire.