Blue cheese of blue veins. The distinctive flavor and aroma of blue cheese arises from methyl ketones (including 2-pentanone, 2-heptanone, and 2-nonanone) which are a metabolic product of "Penicillium roqueforti". These compounds are not formed in other types of cheese fermented by bacterial acidification alone. In the European Union, many blue cheeses, such as Cabrales, Danablu, Gorgonzola, Roquefort and Blue Stilton, carry a protected designation of origin, meaning they can bear the name only if they have been made in a particular region. Similarly, individual countries have protections of their own such as France's Appellation d'Origine Contrôlée and Italy's Denominazione di Origine
Swaledale cheese Swaledale cheese Swaledale is a full fat hard cheese produced in the town of Richmond in Swaledale, North Yorkshire, England. The cheese is produced from cows’ milk, Swaledale sheep's milk and goats’ milk. The cheeses are round in shape with an average weight for the cheese wheel of and are made with unpasteurised milk. The animals whose milk is used to make Swaledale cheese, all graze on land in Swaledale which makes their milk characteristic of the area as a particular mixture of herbs and grasses grow there due to its soil and climate and this give the cheese distinctive