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1. Peel the potatoes and cut them into strips. Drain the water. Use a kitchen towel or cloth to absorb the water. At this time, preheat the oven for 5-10 minutes.
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2. Spread tin foil on the baking sheet and spread a layer of oil.
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3. Put the potatoes in tin foil and wrap them up.
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4. Put it in the oven and bake for 20 minutes.
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5. After baking for 20 minutes, take it out, open the tin foil, sprinkle with salt and black pepper, and bake for 15 minutes in the oven.
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