Livermore Valley AVA unique east-west orientation, unlike many other winegrowing valleys. Due to a reliable onshore afternoon/evening breeze off of the San Francisco Bay a wide fluctuation in temperature between sites and a large diurnal temperature swing occur. Livermore Valley is considered a Winkler Region III grape growing zone with temperatures comparable to northern Napa Valley appellations such as St. Helena or Calistoga. The relatively obscure Petite Sirah grape produced Livermore's best historically known red wine, although the climate also makes for interesting dessert wines as well as excellent Cabernet Sauvignon, Merlot and Rhone varieties. The original plantings of Sémillon and Sauvignon blanc
Gamay fruit expressions reminiscent of bright crushed strawberries and raspberries, as well as deep floral notes of lilac and violets. Gamay-based wines are typically light bodied and fruity. Wines meant to be drunk after some modest aging tend to have more body and are produced by whole-berry maceration. The latter are produced mostly in the designated 'Cru Beaujolais' areas where the wines typically have the flavor of sour cherries, black pepper, and dried berry, as well as fresh-cut stone and chalk. In addition to being well suited to the terroir of Beaujolais, Gamay is grown extensively in the Loire Valley around