Welcome to Prager Winery & Port Works, located in the heart of the Napa Valley. We are a small family owned and operated winery, producing just 3600 cases annually. Since the first harvest in 1979, we have been specializing in the production of wine and various styles of California Port, which include Vintage, Late Bottle Vintage, Tawny and even a couple of White Ports. Table wines consist of Petite Sirah and a dessert Late Harvest Riesling. Visit our Tasting Room for an informative Port experience. Tasting is offered Monday - Saturday from 10:30-4:30pm, closed Sundays.