Sheep milk cheese include Pag cheese and Ovidur. Polish sheep milk cheeses include oscypek and bryndza. Portuguese sheep milk cheeses include Castelo Branco, Azeitão, Rabaçal, Saloio, Serpa and Serra. In Spain is Roncal, made in the Roncal Valley, and is protected by the Protected designation of origin (PDO). Other cheeses from Spain are Torta del Casar and Manchego. Sheep milk cheese Sheep milk cheese is a cheese prepared from sheep milk. Well-known cheeses made from sheep milk include the Feta of Greece, Roquefort of France, Manchego from Spain, the Pecorino Romano and Ricotta of Italy. Yogurts, especially some forms of strained yogurt, may
History of cheese from the outset. It is the only form in which milk can be kept in a hot climate. Animal skins and inflated internal organs provided storage vessels for a range of foodstuffs. Cheese produced in Europe, where climates are cooler than in the Middle East, required less salt for preservation. With less salt and acidity, the cheese became a suitable environment for useful microbes and molds, giving aged cheeses their pronounced and interesting flavors. The earliest evidence of cheese () is the Sumerian cuneiform texts of Third Dynasty of Ur, dated at the early second millennium BC. Remains identified as