Pierre Riffault is a wine producer in Sancerre, a wine region located in the eastern part of the Loire Valley in France. Sancerre is known for producing high-quality Sauvignon Blanc wines, as well as some Pinot Noir.

Pierre Riffault's vineyards are located on the hillsides of Sancerre, where the soil is composed of limestone and clay. Riffault is known for using sustainable and organic farming practices in his vineyards, which he believes helps to produce wines that express the terroir of the region.

Riffault's Sancerre wines are typically crisp and minerally, with bright acidity and flavors of citrus, green apple, and sometimes a hint of herbal notes. They are generally considered to be of high quality and have received praise from wine critics and enthusiasts.