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
Dun Cow Fable.) A similar legend applies to Dun Cow Rib Farm in Halfpenny Lane, Whittingham, Lancashire, just outside the town of Longridge. Embedded in its wall is a large rib, supposedly from a giant dun cow that gave milk freely to all comers, but died of shock when an old witch asked it to fill a riddle (sieve) instead of a pail. An alternative legend claims that the giant cow's milk saved the local inhabitants from the Plague, and it was buried at nearby Cow Hill, near Grimsargh. It was also claimed that the cow would quench its thirst at "Nick's