The Sonoma Valley AVA is situated in the southern portion of Sonoma County, near the town of Glen Ellen. A total of 14,000 acres are planted, with one-quarter being Chardonnay; Pinot Noir, Cabernet Sauvignon and Merlot are next in total acres planted. The southern sector, which is closer to the San Francisco Bay, is cooler and ideal for Chardonnay and Pinot Noir, while hillside vineyards situated further north, are ideal for Cabernet Sauvignon and Merlot, while there are some century old Zinfandel vines in the lowlands. In general, these are fruit-driven wines with medium-weight tannins and good acidity; the wines are very well balanced and approachable upon release. (Wine/Appellations)