How is it that Napa Valley produces excellent Cabernet Sauvignon but lacks Pinot Noir of great heritage? Mendocino grows wonderful white grape varieties but cannot produce world- famous red wines. Sonoma produces outstanding Zinfandel but wine judges look the other way at their Cabernet Sauvignon. This class will familiarize you with the six major California grape-growing regions to aid you in making the best choices when purchasing California wines.