It is very simple to make soup in a waterproof stew pot (electric stew pot) in the sky. The basic method is to clean and cut the ingredients, add water to stew, select the cooking program, and finish it automatically without any trouble. Take Zhuxin Decoction as an example: 1. Cut pig heart into pieces, wash, slice, season with starch, salt and shredded ginger, and marinate for 30 minutes; 2. Wash the medlar and soak it in warm water; 3. Put the ingredients into the inner container of the saucepan, add appropriate amount of water, stew for 2.5 hours, and then season.