Portugal has an ancestral tradition in the production of cheeses in all regions, with 16 Denomination of Controlled Origin (PDO) and 1 Protected Geographical Indication (PGI).
Those traditional cheeses are made, mainly, with sheep's milk and goat's milk, but also cow's milk, in the Azores.
The best known out of doors may be, perhaps, the Serra da Estrela DOP Cheese, obtained from raw sheep's milk, from the breeds Bordaleira da Serra da Estrela or Churra Mondegueira, but all deserve to be tasted.