In this regard, Chen Liansheng, the author of "Beijing Flavor Snacks", has an authoritative interpretation: stewed and burned is a "business card" representing Beijing snacks! When it comes to cooking and burning, old Beijing will definitely think of "small intestine Chen", but I don't know that this delicious food, which has a history of more than 100 years and is thought to be eaten only by the poor, originated from the court. It evolved from the Soviet-made meat in the imperial palace. The high-quality pork belly is selected for Suzhou meat, which is unaffordable for ordinary people. So the inventor replaced it with cheap pig's head meat, and then added lower-priced pigs into the water, such as the method of pot cooking, and named it "pot cooking fire". The specific production process is as follows: the processed pig small intestine and pig lung are boiled in a marinated soup prepared with various spices and seasonings, and when they are ready, they are put into a dead surface to burn and fry tofu slices, and then they are taken out when the intestines and lungs are cooked thoroughly and do not lose their shape. The small intestine is cut into sections, the lungs are burned and fried into pieces, marinated, and garlic juice, soy bean curd juice, coriander, vinegar and Chili oil are added. There are more than 20 kinds of main ingredients, auxiliary materials and seasonings in a bowl of stewed food. This does not include all kinds of traditional Chinese medicines used to make marinade: angelica dahurica, licorice, clove, Amomum villosum, cardamom, cinnamon and so on. Therefore, the stewed fire has the effect of warming and tonifying, which is more suitable for eating in winter, and can drive away cold and warm the stomach and stimulate appetite. However, there are a lot of pig viscera in the stew fire, so the cholesterol content is high and the calories are high. People with hyperlipidemia and hypertension should eat less. Secondly, people with weak gastrointestinal function should not eat more because the dead face is not easy to digest. Try to match fruits and vegetables with high vitamin C content and fiber when eating.