First, put the dried vermicelli into 50-60 degree water, soak it for 10 minute, and soak the vermicelli until soft. Then, boil a pot of water. When boiling water, put sesame, Jiang Mo, garlic, coriander, pepper powder, monosodium glutamate, chicken essence, pepper, salt, soy sauce, vinegar, sesame oil and Chili oil in a large bowl, and then add stock, chopped green onion and lard to make a base. When the water in the pot is boiled, put the softened vermicelli into the pot and boil the soup. After about half a minute, put it into a bowl with a bottom. Finally, put the pea tip into hot water to make soup, add mustard tuber, fried peanut beans, soybeans and coriander, and the authentic Sichuan snack hot and sour powder is finished. Because sweet potato vermicelli is cooked, it doesn't need to be cooked for too long.