Jean-Pierre Wolff farms 55 acres of Chardonnay vines in the bucolic Edna Valley, outside the town of San Luis Obispo. Originally planted in 1976 by Edna Valley wine pioneer Andy Macgregor (Wolff purchased the property from Macgregor in 1999), the vineyard is the oldest in the Edna Valley. Mount Eden has made Chardonnay from this vineyard since 1985. These mature vines typically yield two to four tons per acre.