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
Herve cheese Herve cheese Herve is a Belgian rind washed soft cheese made from cow's milk. The aging process takes place in ripening cellars of the Herve countryside, sometimes cut into its chalky rock. Herve comes from the Belgian town of the same name, which was part of the Duchy of Limburg. It has been produced since the 15th century. Other variants of pungent and soft "Limburger" cheeses are now made in many countries, using the name derived from the old Duchy. It is sometimes flavored with herbs. Herve has a pale yellow interior with a glossy reddish-brown coating created by the