“Sour powder” is a traditional snack in Sichuan, Guizhou, etc., which has long been popular because of its cost-effectiveness and is characterized by “smack, spicy, fresh, aroma, sour and oily”. The sour spicy powder is a pure green food, the main powder being fine-tuned by the optimum scale of the potatoes, reds and peas, and then produced by the traditional manual leakage of farmers。