Rice is rich in nutrition and is one of the main foods for everyone. It is rich in protein, fat and carbohydrates. If it is kept in a sealed glass jar, it can be kept for a long time. According to records, some studies have found that rice stored in underground containers for 30 years can still be eaten, which proves that rice stored in sealed containers can prevent reptiles from entering and can be preserved for 30 years. Usually it doesn't take that long at home, and it's okay to keep it in a cool and dry place for 2-3 years.

Second, salt.

Salt is an essential ingredient in human daily activities. There are bags of refined salt and iodized salt in the supermarket. There is a lot of refined salt in the kitchen at home, so we should use salt to clean fruits and vegetables. Refined salt will not deteriorate in dry environment for decades, but the shelf life of iodized salt is only one year. After expiration, iodine volatilizes and salt is still used normally.

Third, honey.

Honey will not go bad easily because of its high sweetness and high osmotic pressure. The container for storing honey should be sealed and placed in a cool and dry place, which can be preserved for a long time. Merchants generally define the shelf life as 18 months or 2 years, but it can be eaten for a long time.

Fourth, soy sauce.

Soy sauce is eaten in every family in our country, with high sodium content, as long as it is not opened. Store in a cool and dry place for a long time.

Five, dried bean curd

Beans such as soybeans, black beans, red beans and mung beans will not go bad for decades as long as they are fully dried and sealed in bottles.

Six, canned food

Canned food was invented by a French chef in the18th century. At that time, Napoleon was fighting on all sides, and the food rotted when it was transported to the front. French chefs process food well, put it in bottles, put it in boiling water pots, cook it for 1 hour, and seal it, which can keep the food from going bad for a long time, thus providing a guarantee for the French army. You can stock some canned meat and fruit at home at ordinary times, and get ready when necessary.

Seven, milk powder

Milk powder is rich in nutrition, which is made of fresh milk after treatment, dehydration and drying. Can provide a variety of essential nutrients for the human body, if properly preserved, the shelf life can reach more than 2 years. If stored in a nitrogen-filled bottle, it can be guaranteed not to deteriorate for decades.