put the food into the inner pot (boiled in cold water), cook it on the fire, put the inner pot into the insulated outer pot after boiling (or after flameout), connect the clips on the insulated outer pot with the lugs of the inner pot, and cover the insulated outer cover. The food continues to be cooked in the inner pot, and the food can be taken out for eating after the delay is not equal.

1. Cook rice, dry vermicelli, and cook dumplings. After the water boils, turn off the fire, and move the inner pot into the outer pot.

2. Boil sparerib soup, chicken soup, mung bean soup and porridge, then boil for 1-2 minutes, then turn off the fire, and move the inner pot into the outer pot with heat preservation. 3. Braised beef, mutton, pig's feet and beer duck are boiled for 2-3 minutes, then the flame is turned off, and the inner pot is moved into the outer pot with heat preservation. 4. Steam rice flour meat, rice (and soup at the same time), and cook zongzi. Boil the water for 1-3 minutes, then turn off the fire, and move the inner pot into the outer pot with heat preservation. 5, safety and environmental protection, no high pressure, normal temperature steaming, boiling, stewing, halogen, original flavor;

6. Use cold water to cook food, and all kinds of food can be eaten after a delay of different time (more than 15-25 minutes). 7. The best equipment for office workers, students, field workers and taxi drivers to bring meals for lunch.

8. 3-5 hours in winter and 8-1 hours in summer. It can also be used as an ice bucket in the field.

9. Make porridge 1:8, cook rice 1:2.5 and cook mung bean soup 1:1.