Do you want plastic wrap? It depends. Generally speaking, if you heat ordinary vegetables, you don't need to add plastic wrap because vegetables contain water; If the leftovers are hot, it is best to add a layer of plastic wrap, because this will not harden the rice on the surface; If it is hot meat food, it is best to add a special plastic cover, because during the heating process, the oil on the surface of the meat will be fried when heated, and without the cover, the microwave oven liner will easily be fried everywhere.

From the point of view of food safety, the plastic wrap commonly used in general families is not heat-resistant. When food is heated in packaging, the grease in food can easily dissolve harmful substances such as plasticizer in plastic wrap.

However, from the perspective of electrical safety, if the plastic wrap is not covered, the steam and oil in cooking will pollute the inner wall of the microwave oven after being heated and evaporated, and in severe cases, too much oil will accumulate on the inner wall, which will lead to a fire. Therefore, when hot dishes, especially those with soup, it is best to cover the special cover of microwave oven with glass to avoid unnecessary troubles such as short circuit of microwave oven caused by too much steam.

It is forbidden to use microwave ovens. 1. Don't heat the meat until it is half-cooked.

Because bacteria will still grow in half-cooked food, it is impossible to kill all bacteria by microwave heating for the second time because of the short time. Frozen meat must be thawed in the microwave oven before it is heated and cooked.

2. Avoid freezing the meat thawed in the microwave oven again.

Because after the meat is thawed in the microwave oven, it has actually heated the outer layer at a low temperature. At this temperature, bacteria can reproduce. Although freezing can prevent its reproduction, it can't kill living bacteria. Meat thawed in a microwave oven must be heated until it is fully cooked if it is put into a box for freezing.

Step 3 avoid fried food

Because of the high temperature, oil will splash and cause fire. If you accidentally turn on the furnace, don't open the door, turn off the power first, and then open the door to cool down when the fire goes out.

4. Avoid working overtime to keep warm?

5. Avoid ordinary plastic containers.

Use special microwave utensils to hold food and put it in the microwave oven for heating. First of all, hot food will deform plastic containers. Second, ordinary plastics will release substances, which will pollute food and endanger human health.

6. Avoid using metal appliances

Because there are iron, aluminum, stainless steel, enamel and other utensils in the furnace, when the microwave oven is heated, it will generate sparks and reflect the microwave, which will not only damage the furnace body, but also heat the uncooked food.

7. Avoid using closed containers.

Wide-mouth containers should be used when heating liquid, because the heat generated by heating food in a closed container is not easy to dissipate, which makes the pressure in the container too high and easily leads to blasting accidents. Even if you use shells to cook food, you should pierce the shells with needles or chopsticks in advance to avoid bursting after heating, splashing out to pollute the furnace wall or injuring people.

Food should be thawed or heated in a microwave oven. If you forget to take it out, throw it away after more than 2 hours to avoid food.

8. Avoid staying near the microwave oven for a long time?

After turning on the microwave oven, people should stay away from the microwave oven or at least 1 m away from the microwave oven.

9. Avoid putting the microwave oven in the bedroom?

At the same time, be careful not to cover the grille of the cooling window on the microwave oven with objects.

? 10. Avoid the microwave oven. Start the microwave oven before you put the food in.