It is said that there is a formula. If you find the answer online, then many people will open stores. In fact, Qingshuping rice noodles still have different tastes. According to different personal tastes, some people like to eat Gongnongping, some people like to eat opposite the police station, and some people like to eat crossroads. These places have different tastes. I personally like the taste of workers and peasants, so I personally think the formula is not unique. I don't think the owners of those rice noodle shops have changed the formula, otherwise the taste would not be different. But the raw materials are all the same. All I know is to cook soup with bones, add some spices such as aniseed and cinnamon, and separate the soup from the bones when it is cooked. In addition, heat the oil in the pot, fry it in Chili powder and then pour it into the soup. Of course, you should also put salt and chicken essence in this process. Think for yourself. Finally, soak the powder. I think I've seen everything I've eaten, so I won't say much.