1. Prepare the materials.
2. Peel and shred potatoes, the thickness is up to personal preference, and wash off excess starch in cold water.
3. Cut green onion into sections; cut pepper into sections; crush garlic into pieces.
4. Bring water to a boil in a pot, add shredded potatoes to blanch for half a minute, remove the cold water and drain the water.
5. Add oil to the pot, fry the peppercorns on low heat, and remove the peppercorns.
6. Add chili and garlic and stir-fry over high heat until fragrant.
7. Add potato shreds and stir fry quickly.
8. Pour in white vinegar, add salt and sugar to taste, add the shallots before serving.
