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
Valençay cheese to ripen in a humid, ventilated room. Affinage lasts for three weeks during which time its characteristic external mould forms and the central pate - initially crumbly - softens. The cheese is available between March and December, with peak manufacture between April and August. Valençay cheese Valençay is a cheese made in the province of Berry in central France. Its name is derived from the town of Valençay in the Indre department. Distinctive in its truncated pyramidal shape, Valençay is an unpasteurised goats-milk cheese weighing and around in height. Its rustic blue-grey colour is made by the natural moulds that