1. Wash the potatoes, cut a knife at the bottom first, then lay them flat on the chopping board, cut into pieces first, and then shred them. Prepare a pot of clear water, drop a little vinegar, soak the shredded potatoes for a while, then rinse them with clear water and drain them.

2. Heat oil in the pot, add pepper, smell pepper (don't fry pepper), turn off the fire and pick out pepper.

3. Turn on the fire again. When the oil temperature is 70% hot, add dried red pepper. After smelling the spicy taste, add chopped green onion and fry for 2 minutes. Then add vinegar, soy sauce, sugar and salt in turn and stir-fry for 1 min, then add shredded green pepper and stir-fry for about 1 min.

4. Wash potatoes, first cut a knife at the bottom, smooth it, then put it on the chopping board, cut it into pieces first, and then shred it. Prepare a pot of clear water, drop a little vinegar, soak the shredded potatoes for a while, then rinse them with clear water and drain them.

5. Shred pepper, a little pepper, 8 dried red peppers and a little chopped green onion.

6. Heat oil in the pot, add pepper, smell pepper (don't fry pepper), turn off the fire and pick out pepper.

7. Turn on the fire again. When the oil temperature is 70% hot, add dried red pepper. After smelling the spicy taste, add chopped green onion and fry for 2 minutes. Then add vinegar, soy sauce, sugar and salt in turn and stir-fry for 1 min, then add shredded green pepper and stir-fry for about 1 min.