When heating meals in the microwave oven, it is necessary to open the lid of the lunch box, not completely seal it.

the reason why it is necessary to open the lid: the heat generated by food heating is not easy to dissipate, and the pressure inside the container increases, which may lead to the deformation and even explosion of the lunch box.

It is best to use a special microwave lunch box, avoid metal utensils or completely closed containers to heat the heated lunch box.

extended information

if food is thawed or heated in the microwave oven, if it is forgotten to take it out, if it takes more than 2 hours, it should be thrown away to avoid food poisoning. The heating time of microwave oven depends on the material and dosage, and it is also related to the freshness and water content of food.

Because the heating time of various foods is different, if you are not sure about the required heating time of foods, it should be shorter. After heating, the heating time can be added according to the degree of raw and cooked foods. Otherwise, if the time is too long, the food will become hard, lose its fragrance, color and taste, and even produce toxins.

Adjust the timing and power (temperature) knob according to the types of food and cooking requirements, so that you can read the instructions carefully and get to know them.

Baidu Encyclopedia-Microwave oven (cooking tool for heating food by microwave)