1. Shred potatoes, shred green peppers and red peppers, and chop garlic.
2. Heat oil, add garlic and saute.
3. Add potato shreds and stir fry for a few seconds.
4. Add salt, old vinegar, and white vinegar, and stir-fry for one minute.
5. Add chili and stir fry for one minute.
6. Plate.
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