Cheese in the categorization of these cheeses is their age. Fresh cheeses without additional preservatives can spoil in a matter of days. Content (double cream, goat, ewe and water buffalo) Some cheeses are categorized by the source of the milk used to produce them or by the added fat content of the milk from which they are produced. While most of the world's commercially available cheese is made from cows' milk, many parts of the world also produce cheese from goats and sheep. Some cheeses are described by their fat content. Double cream cheeses are soft cheeses of cows' milk enriched
Pierogi Typical Ukrainian fillings for varenyky include cottage cheese, potato, boiled beans, mushy peas, sauerkraut, plum (and other fruits), potato and cheese, cabbage, meat, fish, buckwheat. A traditional dish in Slovak cuisine is "bryndzové pirohy", dumplings filled with salty bryndza cheese mixed with mashed potatoes. "Brydzové pirohy" are served with some more bryndza (mixed with milk or sour cream, so it has texture of a liquid and serves as a dip) and topped with bacon or fried onion. In Slovakia, "pirohy" are semicircular shaped. Along with bryndzové halušky, "brydzové pirohy" is one of Slovakia's national dishes. "Ajdovi krapi" (literally buckwheat carps)