How to make authentic Chongqing hot and sour powder?

Authentic Chongqing hot and sour powder is made as follows:

1. Wash the sweet potato powder and soak it in clear water;

2. Wash the parsley and cut into pieces;

3. Wash the cut flowers with shallots;

4. Chop mustard tuber;

5. Pour oil into the pot, heat it, saute pepper, dried pepper, pepper powder, Chili powder and white sesame seeds, add broth, boil it and put it in a bowl;

6. Boil half a pot of water in the pot, heat the sweet potato powder and put it into the soup bowl;

7. Add monosodium glutamate, baoning vinegar, refined salt, spiced peanuts, mustard tuber and sesame oil, and sprinkle with coriander and chopped green onion.