Cooking is to put the pot directly on the fire for stewing, which is based on the principle of water separation; Cooking soup will make the soup less and less cooked, and the ingredients will be tender, while the stew will be clearer and not turbid. Whether it is "pot" or "stew", it should be cooked for more than 3 hours, and it is best to eat it within 24 hours, which not only ensures delicious taste, but also fully absorbs nutrients and gives full play to the efficacy.