you are suppossed to keep milk cold, so it doesn't spoil so then what happens wehn you make warm milk? what would happen if you made warm mlike, or even hot milk, and left it out, would it go bad still?
well if you kept it just the right warmth, with a drop of left over yogurt from the bottem of a yogurt you'd almost finished from the night before, in the morning, the whole thing would be yogurt! i've done that. cheesmaking also begins with heated milk. it's all in what kind of bacteria there is in it or is introduced to it. backteria and other things. i forget all the exact details. but cheese really is 'just' 'spoiled' milk. which doesn't mean all spoiled milk is good for you, or becomes yogurt or cheese. remember it's the bacteria. and lots of kinds of bacteria arn't good for us. but some are. or at least help to make things that are at least 'mostly harmless' =^^= .../\...
after they get the milk from the cow they heat it during pasturisation. heat it then cool it then drink it.
I've made homemade yogurt before. It was actually really good, much better than the store-bought. I was a bit hesitant about the whole unrefrigerated incubation process, but it worked out, and nobody got sick from it.
