Join us this Saturday for a tour through the huge swath of central northern Spain known as Castilla y León.  We'll begin close to the origins of the Duero river to sample a deeply colored rosé representative of one of Tempranillo's grape's most significant stomping grounds, Ribera del Duero.  We'll continue along the river to find our next two destinations, Rueda and Toro, for a taste of a glimmeringly bright Verdejo-based white and an oak-infused red made from the local strain of Tempranillo, Tinta de Toro.  Next, we'll venture northward in the direction of the ancient city of León for a meeting with the illusive Prieto Picudo grape, whose evocative name can be translated to "black beak."  Our final destination is the rather Galician outcropping of Bierzo, home to some of the most imposing examples of the quintessentially northwestern Mencia grape.