Winemaker Notes
Celebrated for its bold flavors and supple texture, Malbec has enjoyed runaway success in Argentina since the late 20th century. The grape originated in Bordeaux, France, where it historically contributed color and tannin to blends. A French agronomist, who saw great potential for the variety in Mendoza’s hot, high-altitude landscape, brought Malbec to Argentina in 1868. Somm Secret—If you’re trying to please a crowd, Malbec is generally a safe bet with its combination of dense fruit and soft tannins.
As one of Napa’s coolest sub-appellations, the area begs for diversity among its vineyards. Merlot and Chardonnay firmly compete with Cabernet Sauvignon for a place here. Some of Napa’s best Zinfandels also come from the Oak Knoll District.
Situated far in Napa’s southern end, Oak Knoll receives a strong cooling influence from both the San Pablo Bay and the Pacific Coast’s evening fog and breezes. Summer days are warm but on average ten degrees cooler than in St. Helena farther north up the valley; summer nights are chilly. A long growing season promotes for leisurely ripening of grape berries, resulting in an impressive balance of sugars, phenols and acidity.
Notable producers include Trefethen, one of the appellation’s oldest wineries, Robert Biale, legendary Zinfandel producer and Lewis Cellars, a family-run, hands-on establishment.