Est. 1976. Founded by legendary vintners Dan and Margaret Duckhorn in 1976, Duckhorn vineyards is an iconic American winery. Harvested from our estates and elite vineyard sites in California's north coast, this rich and elegant sauvignon blanc was blended with Sémillon to add depth and complexity. Fermented and aged using both stainless steel and French oak, it offers ripe citrus and tropical flavors. The Duckhorn portfolio.