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
Bryndza in Russian, "brenca" in Serbian, "Brimsen" in German, and "ברינזע" in Yiddish, "bryndza", a word borrowed from Romanian "brânză" ("cheese"), is used in various countries throughout Ukraine and the EU, due to its introduction by migrating Vlachs. Though the word "brânză" () is simply the generic word for "cheese" in Romanian, there is no special type of cheese associated with it. It is a word presumably inherited by the Romanian language from Dacian, the language of the pre-Roman population in modern-day Romania. Outside Slovakia and the flanking regions of Southern Poland, it is still popular nowadays in the Czech Republic