Ingredients: beef bone, flour paste, soy sauce, onion, ginger, garlic, spice bag, star anise and salt.

1. Soak the bone in cold water for several hours.

2. Put fried noodles in the pot and cook soy sauce.

3. Prepare onion, ginger, garlic, spice bag and star anise.

4. Put the cow's nest bone in a cold water pot, boil it over high fire and skim off the floating foam. Pour the fried materials and seasonings into the pot and stew for 2 hours.

5. After two hours, add salt and stew for 20 minutes.