Interesting, must try that out sometime. In India paneer (a sort of Indian cottage cheese) is made that way, by putting lemon juice in hot milk, which makes it curdle. Then the curds are put into a cloth and hung up for a few hours to drain off the whey. What's left is paneer, which can be eaten raw, or used in dishes like palak paneer (spinach with paneer), mutter paneer (green peas with paneer), some Indian sweets, etc.