2. Prepare the yam that needs to be fried.
3. After washing the yam, use a peeler to remove the skin from one end, then wrap the peeled yam with a clean cloth and hold the skin from the other end, so peeling is very simple.
4. Rinse the skin and cut it into pieces.
5. Heat the wok with oil and stir-fry the yam.
6. Add salt and water and continue to stir fry. A lot of mucus will flow out at this time. Turn off the heat, then add some sugar and vinegar and continue to stir fry for a while.
7. Stir the sugar and vinegar evenly, then turn off the fire and put on the plate.