The sheep's cheeses of the Aísa valley Food and drink · Aísa, La Jacetania, Huesca In Esposa and other centers of the valley artisan cheeses are made with sheep's milk from the flocks that climb to the high pastures of Aísa, matured in a natural chamber and continuing the old cheese-making tradition of the shepherds. Photo: Juan Emilio Prades Bel (CC BY 4.0) What to see and do in Aísa