1. Prepare the first mustard tuber, wash it, cut it into strips and put it in a basin for later use.
2. Wash the mustard tuber repeatedly with clear water for three times, and cover it with cold boiled water and salt for about two days.
3. Slice ginger, garlic and dried pepper.
4. Put oil in a hot pot, and put ginger slices, garlic slices and dried peppers together.
5. Put the mustard tuber into all the auxiliary materials and stir-fry for a while.
6. The fried mustard tuber can be eaten immediately or poured into a bottle for taking at any time.