A long time.
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Depending on working conditions. See for general informations the link below.
You taste lactic acid when the milk becomes sour. Acids, in general, sour.
Sour milk can be used in recipes as a substitute for buttermilk. To make a sour milk substitute, add 1 tablespoon of vinegar or lemon juice to 1 cup of milk and let it sit for 5-10 minutes. This will curdle the milk and create a similar tangy flavor to buttermilk.
It is a chemical change because there is a chemical reaction occurring that is rotting the milk. An example of a physical change would be if the milk was evaporated or frozen.
During summers, milk can turn sour due to a chemical change called souring. This is caused by the growth of bacteria in the milk, which metabolize the lactose (milk sugar) into lactic acid. The lactic acid decreases the pH of the milk, giving it a sour taste and causing the proteins to denature.
Yes, sour milk is an acid. The lactic acid makes the milk acidic, milk is said to be sour when it is at a pH level of 4.3-4.5 (acidic) Yes, sour milk is an acid. The lactic acid makes the milk acidic, milk is said to be sour when it is at a pH level of 4.3-4.5 (acidic)
It takes about anywhere from 5 - 6 weeks for milk to go sour
Milk is sour because it is spoiled and how milk spoils is if you leave it out so long that it will get so spoiled and it will smell so funny that you will wanna take it out of your refrigerator. So that is why milk is so sour.[ IF YOU DISAGREE TO ANY OF THIS MAKE YOU AN ACCOUNT AND CORRECT ME AND I WILL SEE WHAT YOU SAY AND ADD THAT TO WHY MILK SPOILS].
Buy a regular milk and leave it out a long time.
the sour milk stank
If left out on the counter and never refrigerated, it takes around 24 to 48 hours for it to get sour.
sour milk
On the milk bottle there should be an experation date. Some time after the experation date it shold go sour. But dont wait too long!!
Sour milk is milk that is off. You drink, you get diarrhoea. So don't drink sour milk.
Any milk can go sour.
No Your right sour milk can never be too sour for an recipe.. I agree with you on that one.
To prevent milk from turning sour when making sour milk, you can add a small amount of vinegar or lemon juice to fresh milk to curdle it, rather than letting it naturally sour over time. This will give you the desired sour flavor without the risk of the milk going bad.
Sour milk is an alkali contain different alkalis in it.