1. Hot and sour powder is a traditional snack of Han nationality in Sichuan, Chongqing and other places, which has the characteristics of "hemp, spicy, fresh, fragrant, sour and oily but not greasy". The main powder of "hot and sour powder" is made of sweet potato, sweet potato and pea in proportion, and then made by farmers by traditional hand. Hot and sour powder originated from Sichuan folk, and was made of local hand-made sweet potato powder. The taste was named after its outstanding hot and sour taste.

2, the origin of hot and sour powder, such allusions are widely circulated. Sichuan can be traced back to the Three Kingdoms period. At that time, after Liu Bei, Guan Yu and Zhang Fei became sworn friends in Taoyuan during the Three Kingdoms period, the owner of Taoyuan specially cooked meals for them, and chose the popular sweet potato powder as the main ingredient, which implied that the friendship of these three people was as long as this vermicelli, and added a very spicy pepper, old altar sauerkraut, brown sugar and Huang Lian. Liu Bei means to let the three people understand that they are not afraid of ups and downs.