What is cheese primarily made of?

Explanation

Cheese is a food made ​​from milk that is being fermented with rennet or different lactic acid bacteria. Normally the milk is from cows, but milk from buffaloes, goats or sheep may also be used. Cheese can be classified according to the method of manufacture and grouped as kneaded cheese, stretched cheese or washed cheese. Today, cheese is manufactured almost anywhere in the world and its history goes way back. The origin of the cheese is unknown.