After milk is frozen, the fat and protein are separated, and casein is concentrated into powder, so the taste of milk will be obviously weakened, and the nutrients are not easily absorbed.
Generally speaking, fresh milk is a milky white or yellowish uniform colloidal liquid, which has no precipitation, no clots, no impurities, no starch feeling and no peculiar smell, and has the inherent fragrance of fresh milk. If you pour milk into a cup and shake it, it is easy to hang on the wall; Drop a drop of milk on the glass, which is round and not easy to flow away; There are no clots and flocs after cooking.
Extended data:
Precautions for drinking milk
1, people who are prone to bloating should not drink milk.
Although milk can help the human body to promote digestion, accelerate intestinal peristalsis, and discharge excess garbage from the body. However, in the process of digestion and absorption, milk is also prone to produce a lot of gas, so people who are prone to abdominal distension should not drink milk.
People with lactose allergy should not drink milk.
Milk is a kind of food rich in lactose. People who are allergic to lactose are not suitable for drinking milk. Once they drink milk, it will lead to diarrhea, which is not good for their health.
Baidu Encyclopedia-Home page reminds you to drink milk correctly