The vineyards used for Offerus are located in two distinct St. Joseph areas. The communities of Mauves, Tournon, and St. Jean de Muzols yields most of the blend. These southern vineyard sites express tightly wound tannins, spice, and power. They add structure and depth to complete the harmony of Offerus. 80% of this southern fruit comes from one of their own vineyards called Les Clos Florentin, which Jean Louis bought in 2009. These are old vines that were only worked by hand or by horse and grown biodynamically on granite. The remainder of the vineyards are located further north in communities around Serrieres. This soil produces wines which are more elegant, with incredible purity, definition, and focus. The wine is fermented in large, wood, open top fermenters and then finished in old oak demi-muids.