was first mentioned in 1310 by Vital Du Four in a book of medicine recipes. Armagnacs have a specificity: they offer vintage qualities. Popular brands are Darroze, Baron de Sigognac, Larressingle, Delord, Laubade, Gélas and Janneau. Cognac comes from the Cognac region of France, and is double distilled using pot stills. Popular brands include Hine, Martell, Camus, Otard, Rémy Martin, Hennessy, Frapin, Delamain and Courvoisier. The European Union and some other countries legally enforce "Cognac" as the exclusive name for brandy produced and distilled in the Cognac area of France and the name "Armagnac" for brandy from the Gascony area of France. Both must also be made using traditional techniques. Since these are considered "protected designations of origin", a brandy made elsewhere may not be called Cognac in these jurisdictions, even if it was made in an identical manner. Cyprus brandy differs from other varieties in that its alcohol concentration is only 32% ABV (64 US proof). Greek brandy is distilled from Muscat wine. Mature distillates are made from sun-dried Savatiano, Sultana, and Black Corinth grape varieties blended with an aged Muscat wine. Brandy de Jerez originates from vineyards around Jerez de la Frontera in Andalusia, Spain. It is used in some sherries and is also available as a separate product. It has a protected designation of origin (PDO). Kanyak (or konyak) is a variety from Turkey, whose name is both a variation of "cognac" and means "burn blood" in Turkish, a reference to its use in cold weather. Portuguese Lourinhã region, just north of Lisbon, is one of the few European PDO that produce only brandy (aguardente vínica), together with Cognac, Armagnac and Jerez. In Moldova and Romania, grape brandy is colloquially called coniac, but is officially named Divin in Moldova and Vinars in Romania. After a double distillation, the beverage is usually aged in oak barrels and labelled according to its age (VS is a minimum of 3 years old, VSOP is a minimum of 5 years old, XO is a minimum of 7 years old, and XXO is a minimum of 20 years old). In Russia, brandy was first produced in 1885 at the Kizlyar Brandy Factory according to a recipe brought from France. Kizlyar brandy is produced according to the classic cognac technology and is one of the most popular beverages in Russia. Also in 2008, the factory restored the status of the Kremlin Suppliers Guild.