How do you make sour milk?!
Answers: like a table spoon of vinegar per one cup of milk? what is it?
Sue is right, the other guys are just being jerks.
In the old days if you left milk sitting out it would sour- that is, it would thicken & taste slightly sour, but still be usable. Now that milk is pasteurized it does not sour, it just spoils & is good for nothing.
leave the milk outside for like a day
as little as a teaspoon of vinegar or lemon juice will sour a cup of milk.
Put the vinegar or lemon juice in the measuring cup then pour the milk to measure in. Stir and let it sit for at least 5 minutes.
If you want the milk more the consistency of buttermilk, use the tablespoon of vinegar or lemon juice.
Put it in the trunk of your car all day.