The souring and curdling of milk is caused by bacteria. These bacteria utilize all the nutrients, i.e., glucose and other vitamins, and produce acids as a waste product.
That's why milks go sour; it's because of the acids produced by bacteria.
Cheese was milk, which curdled but lavishly sprinkled with salt and compacted.
Although this is so, you cannot just put salt into your sour milk as commercial cheese uses cultured bacteria which are laboratory-tested for a specific use.
Making cheese from sour milk will just give you food poisoning.
the sour milk stank
Buy a regular milk and leave it out a long time.
Curd is the coagulated part of a liquid, the part of milk which coagulates when it becomes sour.
Well, Cleopatra was supposed to take baths in the milk of asses. However this is unlikely. Any milk would curdle and turn sour in the hot climate of Egypt. Who would want to bath themselves in sticky, stinky milk? This is not to say that milk was not used as an ingredient in some cosmetic mixture, such as makeup or a body lotion, but as a bath, no way.
The concept of evaporated milk was first thought of in 1852 by a man named Gail Borden, during a transatlantic ship journey, when the cows aboard the ship became too seasick to provide milk. It was another two years before Borden's first experiments with condensing milk produced a milk that did not go sour for three days - bearing in mind there was no refrigeration at that time. Borden was granted a patent for sweetened condensed milk in 1856 and began commercial production the following year. Unsweetened condensed milk, or evaporated milk as we know it, was not canned successfully until 1885.
sour
Acid. Milk goes sour because of lactic acid production by bacteria.
the sour milk stank
sour milk
Sour milk is milk that is off. You drink, you get diarrhoea. So don't drink 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!!
Any milk can go sour.
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.
No Your right sour milk can never be too sour for an recipe.. I agree with you on that one.
it goes in your stomach
As milk becomes sour, its pH decreases. This is because bacteria in the milk ferment lactose into lactic acid, which is an acid that lowers the pH of the milk. The increase in lactic acid content leads to a decrease in pH, making the milk more acidic.
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.