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
Maroilles cheese are often listed in the "Maroilles family". These include Baguette Laonnaise (made in Laon), Boulette d'Avesnes (Avesnes-sur-Helpe), Boulette de Cambrai (Cambrai), Cœur d'Arras (Arras), Cœur d'Avesnes (Avesnes), Dauphin (Nord), Gris de Lille (Pas-de-Calais), Guerbigny (Picardy), and Rollot (Somme). The very successful 2008 French movie "Bienvenue chez les Ch'tis" joked about the strong smell of maroilles cheese. Maroilles cheese Maroilles (pronounced "mar wahl", also known as Marolles) is a cow's-milk cheese made in the regions of Picardy and Nord-Pas-de-Calais in northern France. It derives its name from the village of Maroilles in the region in which it is still manufactured. The