If milk is not pasteurized it can get cultures in it and if you know what you're doing you can make cheese or yogurt out of it but if you don't do it right you can get sick. If milk is pasteurized it just gets rotten and gross and guess what, you can get sick from it. I drink Raw Guernsey milk and I love it but I only drink it when it's fresh. Sometimes milk that is not homogenized can have little chunks of fat in it (basically butter) if the cream has stayed separated too long before you shake it up. If that's the case it's ok to drink. If milk is bad it won't taste or smell right.
3 months ago
Last edited at 11:50PM on 2/8/2013
Some countries and cultures do eat spoiled milk, personally I wouldn't recommend it, it does not taste good. It is not the same thing as cottage cheese or farmer cheese, they don't let the milk spoil in that case they use an agent to curdle it, sometimes lemon juice, vinegar, or sometimes something else. Here is a video that shows how to curdle milk using vinegar http://www.youtube.com/watch?v=BJBO1pSclK0