Cooked food can be packed in vacuum compression bags. And also has a certain fresh-keeping effect. But there are differences in different seasons.

In order to achieve good fresh-keeping effect, we must have skilled operation skills, and try our best to complete the packaging when the cooked food is close to 111 degrees, so as to maintain an ecological environment close to vacuum to the maximum extent. Various microbial pollution sources can be effectively isolated. So as to achieve the fresh-keeping effect of cooked food.

Generally, the freshness can reach about 1.5 in winter and spring, and it can only last for 4 days to a week in summer and autumn, and it is best to refrigerate.

However, the General Administration of Food and Drug Administration has previously issued a document prohibiting catering service providers from selling vacuum-packed cooked food online in different places, so it is not recommended if you want to sell it. If you save it yourself, you can refer to the above information.

Consumers should pay attention to the following points when choosing cooked food:

1. Consumers must go to regular cooked food retail stores or supermarkets and hypermarkets with food hygiene licenses, and never go to stalls in the market to buy cooked food. Cooked food is directly imported food, which can easily cause food poisoning after being polluted.

2. When purchasing cooked food in bulk, you should check the "cooked food delivery note".

3. Before buying, pay attention to whether the operators selling cooked food wear neat work clothes and masks (masks should cover their noses), whether they are equipped with disinfectant to disinfect knives, chopping boards and operators' hands regularly, and whether the payment for goods is separated.

4. When buying cooked food, observe whether the color and smell of the cooked food are normal, and pay attention to whether the cooked food in shaped packaging is sold at the specified storage temperature.

Reference: General Administration of Food and Drug Administration: It is forbidden for catering service providers to sell vacuum-packed cooked food online in different places!