Queserias Picos de Europa S L, based in Posada de Valdeón, specializes in producing traditional Spanish blue cheeses, including the notable Queso de Valdeón. This cheese is characterized by its strong, pungent flavor and is wrapped in sycamore maple or chestnut leaves, distinguishing it from other blue cheeses.

The company is located within the Picos de Europa mountain range, an area that provides a unique climate contributing to the distinct taste of their cheeses.