Milk expired a month but unopened is not allowed to drink.

Milk expired but unopened is also not to drink, if you drink expired milk, may lead to the phenomenon of food poisoning, but also may cause acute gastroenteritis, nausea, vomiting, diarrhea, abdominal pain and other symptoms, the harm to the body is relatively large, usually pay attention to, it is best not to eat some expired food.

Pure milk preservation methods:

1. Fresh milk should be immediately placed in a cool place, preferably in the refrigerator.

2. Do not expose the milk to sunlight or light, sunlight . Light can destroy many vitamins in milk and also make it lose its aroma.

3. When you put it in the refrigerator, put the lid on the milk to avoid his odor into the milk.

Milk poured into cups, teapots and other containers, such as undrinking, should be covered and put back in the refrigerator, do not pour back into the original bottle.

5. Too cold can also have adverse effects on milk. Dairy products in the freezing process, its quality will be affected. Therefore, milk should not be frozen, but chilled in the refrigerator.