Address: 1281 Lewelling Lane, Saint Helena CA 94574 / (707) 963-7678
About Us / Prager Winery & Port Works History: Prager Winery & Port Works is a family owned and operated winery located in the heart of the Napa Valley. Since the first harvest in 1979, we have been specializing in the production of various styles of Premium California Ports. We currently offer Vintage, Tawny and White Ports and Petite Sirah and Late Harvest Riesling table wines. We also carry Chocolate Port Drizzle, Port filled boxed chocolates, carmelized walnuts, 3 varieties of vinegars, and hats and T-shirts with the Prager logo.