Fair of la Uva de Cariñena Activity · Cariñena, Campo de Cariñena, Zaragoza Image of Cariñena, not of the place itself. The Feria de la Uva de Cariñena celebrates mostillo, a sweet made by boiling the must from the grape harvest until it forms a dense paste left to dry in moulds, one of the town's signature products. Photo: Manuel Nao / Gaston Marichal (Public domain) What to see and do in Cariñena