1. Cut the sauerkraut into the end, and cut the bean paste in half. Soak the sweet potato vermicelli in boiling water for 15 minutes.
2. Put oil in the wok, add sauerkraut and stir fry until fragrant.
3. Add the broth to a boil.
4. Add the soaked vermicelli and bean soak, boil and season with a little salt and pepper.
5. Sprinkle with chopped green onions.
6. Simple and easy to make, sour and delicious, you can't stop your mouth.
