1, stew without water, means to put food in a cauldron and directly heat it to make soup.
2, waterproof stew, put the food in a small stew pot, put 80% water in the small stew pot, and use a special waterproof stew pot (with two small lids) for better effect, mainly to prevent the fragrance from leaking out and nutrient loss. Then put the small stew pot in a big pot and drain the water at the same time, and the heat will slowly and evenly penetrate into the small pot through the temperature and pressure of steam in the big pot.