All about curd

Curd is a dairy product obtained by curdling (coagulating) milk. The coagulation can be caused by adding rennet or any edible acidic substance such as lemon juice or vinegar, and then allowing it to set. The increased acidity causes the milk proteins (casein) to tangle into solid masses or curds. Milk that has been left to sour (raw milk alone or pasteurized milk with added lactic acid bacteria or yeast) will also naturally produce curds and sour milk cheeses are produced this way.

Producing cheese curd is one of the first steps in cheese making. The curd is pressed and drained to varying amounts for different styles of cheese and different secondary agents (moulds for blue cheeses) are introduced before the desired aging finishes the cheese.

The remaining liquid, which contains only whey proteins, is the whey. In cow's milk, 80 percent of the proteins are caseins. In the Indian subcontinent, the words "curd" or "curds" are used to refer to "yoghurt".In the Indian subcontinent, another word "paneer" is used to denote a dairy product.

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