1. Peel the potatoes and cut them into thin wires.
2. Soak the shredded potatoes in water twice and remove the starch.
3. Cut the shredded carrot into thin strips.
4. Boil the water in the pot, put the shredded potatoes and carrots together and cook for half a minute.
5. Take out the cold boiled water.
6. Drain the water and put it in a basin.
7. Pour salt, sugar and rice vinegar into a small bowl and mix well with a spoon.
8. Pour the sauce into the double strands.
9. Mix shredded potatoes, carrots and sauce.