1. Wash the dirt from the big potato
2. Peel and cut into pieces, soak in water and oxidize
3. Slice bacon, cut ginger into minced ginger, chopped green onion
4. Boil water, add big potatoes, blanch for 5 minutes
5. Fished out cold water
6. Heat the pan into the oil, saute the minced ginger
7. Add bacon and burst the oil
8. Add big potato
9. Add water, salt and oyster sauce
10. Cover and simmer for 20 minutes on medium heat
11. Stir several times during this period to prevent the water from sticking to the pan
12. Add chopped green onion, turn off the heat, and simmer for 5 minutes
Tips:The peeled potato should be soaked in water and oxidized to change color
