1. It takes a night for milk to freeze into ice. Milk contains beneficial probiotics. After freezing, its probiotics will disappear and its taste will change.

2. In daily life, except ice milk, other dairy products are not recommended to be frozen, and refrigeration is more suitable. Refrigeration will not reduce nutrition, and it is more nutritious and healthier to eat. Don't keep the milk in the refrigerator for too long, usually 15 to 20 minutes.