Types of cheese marketed under the same name are made from milk of different animal—feta cheeses, for example, are made from sheep's milk in Greece and from cow's milk elsewhere. Double cream cheeses are soft cheeses of cows' milk enriched with cream so that their fat in dry matter (FDM or FiDM) content is 60–75%; triple cream cheeses are enriched to at least 75%. There are three main categories of cheese in which the presence of mold is an important feature: soft-ripened cheeses, washed-rind cheeses and blue cheeses. Soft-ripened cheeses begin firm and rather chalky in texture, but are aged from the exterior
Egyptian cheese or close to it; there was an old dry cheese; and there was a medium one in between." The first would have been unripened cheese made locally from sour milk, which may or may not have been salted. The old dry cheeses would have often been imported, and were cheeses ripened by rennet enzymes or bacteria. The nature of the "medium" cheese is less certain, and may have referred to preserved fresh cheeses, evaporated milk or cheese similar to Indian paneer, where the addition of vegetable juices makes the milk coagulate. Medieval Egyptian cheese mostly used buffalo or cows' milk,