The upper layer of the self-heating hotpot can either heat water or add cold water, as long as it is potable water. The self-heating hotpot is a sandwich structure, in which the upper lunch box is used to contain ingredients and water, and the lower layer is used to put the heating pack.

First put the ingredients on the top layer and add water, then take the heating pack out of the sealed plastic bag and put it on the bottom layer and add some water. After that, quickly put the top layer of the lunch box and cover it with the lid, open the ventilation holes and wait for the heating pack in the lower layer to work, and it will be ready to eat in 10~15 minutes. The heating pack has different formulas, but by and large it is mainly composed of quicklime, activated charcoal, iron powder, aluminum powder, etc. The quicklime releases a large amount of heat when it comes into contact with water, which is the main source of heat for the heating pack.

Extended information:

Precautions for eating self-heating hot pot:

1, the water heated by the reaction of the heating pack can not be reused, do not use it to wash your hands or clean the food, etc.;

2, do not put it on the ordinary glass, otherwise May cause the glass to break;

3, be sure to open the ventilation holes to discharge hot air, so as to avoid excessive pressure inside the box caused by small explosions;

4, try to put it on a horizontal surface for consumption, to prevent the hot water containing chemicals inside the overflow;

5, heating pack after the use of reactive material is not environmentally friendly, it is recommended to cool down and then recycled.

People's Daily Online - Self-heating hot pot, how to eat safe