Curd curdled by bacteria and sometimes also rennet), farmer cheese, pot cheese, queso blanco, and paneer. The word can also refer to a non-dairy substance of similar appearance or consistency, though in these cases a modifier or the word "curdled" is generally used. In England, curds produced using rennet are referred to as junket; true curds and whey are produced from the natural separation of milk due to its environment (temperature, acidity). Cheese curds, drained of the whey and served without further processing or aging, are popular in some French-speaking regions of Canada, such as Quebec, parts of Ontario, and Atlantic
Curd pressed and drained to varying amounts for different styles of cheese and different secondary agents (molds for blue cheeses, etc.) are introduced before the desired aging finishes the cheese. The remaining liquid, which contains only whey proteins, is the whey. In cow's milk, 90 percent of the proteins are caseins. In Indian English, used only in the Indian subcontinent, "curd" (or "curds)" is used to refer to the traditional homemade yogurt known as dahi, while "paneer" and "Chhena" are used to denote curdled milk. There are two methods to make curd, with rennet and with acid. Using acid, like lemon