Artisan cheeses of the Chistau valley Food and drink · Plan, Sobrarbe, Huesca Image of Plan, not of the place itself. In Saravillo and other centers of the valley, artisan cheeses and yogurts are made with cow's and goat's milk from the flocks that graze the high pastures; they are among the best-known products of the Sobrarbe. Photo: Pierre Franco (CC BY-SA 3.0) What to see and do in Plan