There are four major AVAs in California. They are the North Coast, which includes Napa Valley, Sonoma, Mendocino Valley and Lake Valley. Most people are familiar with Napa Valley and Sonoma Valley. These regions are known for their Cabernet Sauvignon, Zinfandel, Sauvignon Blanc, Chardonnay and Merlot. The second AVA is the North Central Coast, which includes Monterey County, Santa Clara and Livermore counties. These regions are known for their Syrah, Grenache, Viognier, Marsanne and Roussane. The third AVA is the South Central Coast, which includes San Luis Obispo and Santa Barbara. These regions are known for their Pinot Noir, Syrah, Chardonnay and Sauvignon Blanc. The final AVA is the San Joaquin Valley, which is known strictly for its jug wines. In fact, the bulk of California's wines comes from San Joaquin Valley. Most people would think of Napa Valley and Sonoma, but less than 10% of all CA wines comes from these regions. Even so, Napa accounts for over 30% of wine sales. A lot of people think of "jug wine" being tacky and cheap. However, even in France, only AOC wines account for 35% of all French wines, while the rest is everyday table wines. So, I guess even I will have to get over my wine snobbery on this one!!