Dana Estates is a wine producer of Napa Valley, loccated at the foot of the Mayacamas mountain range. It produces a range of premium single-vineyard wines, mostly from Cabernet Sauvignon with a small inclusion of Sauvignon Blanc. There are three single vineyards spread across the Rutherford and Howell Mountain AVAs. The Helms Vineyard, in Rutherford, is planted solely to Cabernet Sauvignon, and is planted on gentle slopes with well-draining, gravelly loam soils. In Howell Mountain, the Lotus and Hershey vineyards have slightly cooler climates and are both planted to Cabernet Sauvignon, the latter with a small amount of Sauvignon Blanc. In the winery, grapes are fermented in either in concrete tanks, oak uprights or small barrels subject to the character of each vineyard plot. Dana's red wines are all aged in French oak barrels, mostly new, for up to two years depending on the vintage. The Sauvignon Blanc is also aged in barrel, although the percentage of new oak is much less. In addition to the single vineyard wines, Dana Estates also produces a Bordeaux blend of mainly Cabernet Sauvignon with small amounts of Merlot and Petit Verdot.