Yogurt mainly uses yeast to convert sugar and protein in milk into lactic acid and lactose, and then hydrolyzes it into smaller substances, such as galactose and lactic acid, small peptide chains and amino acids. Raw milk is also a kind of milk, which also contains nutrients such as fat, sugar, protein and trace elements, so raw milk can also be made into yogurt.

However, whether any milk is made into yogurt or not, yeast needs to be added and kept at a constant temperature to ferment successfully. If there is mixed bacteria pollution during the period, it may lead to fermentation failure.

The difference between pure milk and fresh milk makes yogurt taste different. Pure milk is made from fresh milk after high temperature sterilization at 132℃, while fresh milk is made from freshly picked milk after low temperature treatment at 85℃. Because the sterilization temperature is different, the taste of yogurt is slightly different.

The sterilization temperature of pure milk with different shelf life is higher, so there are relatively few mixed bacteria in yogurt and the shelf life will be longer; Fresh milk is sterilized at a temperature below 100℃, so it may contain other miscellaneous bacteria, and the shelf life of yogurt is not long.

Does raw milk boil into yogurt? Yes

Raw milk refers to fresh milk that has just been squeezed out and sterilized by pasteurization. If raw milk is used to make yogurt, the amount of bacteria contained in it is somewhat excessive, so it needs to be boiled and sterilized; If raw milk is not boiled when making yogurt, it may lead to the failure of yogurt making, so it needs to be boiled when making yogurt with raw milk.

4 Which one has higher nutritional value, milk or yogurt? There is little difference between them.

Both milk and yogurt are rich in nutrients such as calcium, protein and vitamins, but the biggest difference between yogurt and milk is that yogurt contains more probiotics and trace elements, which are easier to be digested and absorbed by human body, while the lactose content in milk is higher, and the lactose in yogurt will be converted into lactic acid by yeast.

In addition, yogurt will add some sugar during fermentation, so the heat is relatively high; On the other hand, the calories of milk are relatively low, and even without sugar, the taste can remain fragrant.