Stew for about an hour, and it's best to cook for half an hour. It is recommended to stew for about an hour.

Half an hour to an hour is best. If it is bone soup or trotter soup, the time can be appropriately extended, but not more than 3 hours. The longer the soup is cooked, the more vitamin C in vegetables and vitamin B 1 in meat are lost, which is not conducive to nutrition.

Specific practices:

1. Material: one catty of ribs, ginger slices, pepper, cinnamon, star anise, pepper, salt, chicken essence.

2. Wash the ribs, blanch them with boiling water, and then wash them with cold water for later use.

3. Put the ribs in electricity, then add wax gourd, star anise, cinnamon, ginger slices and pepper, and then add seasoning, a little salt (you can add salt soon), chicken essence, pepper and vinegar.

4. Add water (just after the bone), bring it to a boil, and simmer for 2 to 3 hours after 2 minutes. Some rice cookers have automatic function. After adding water, the rest will be given to the rice cookers. It's as simple as cooking ribs and stewing melon with an electric rice cooker.