Cook this soup for the first time. Study while cooking.

Step1:Clean material

Step2:Blanch beef bones. Add 2 tablespoons vinega

Step3:Pull it ou

Step4:Cut bloc

Step5:Put it together. Start a big fire.

Step6:Boil and turn to low heat. Cook slowly. Turn off the fire for 23 hours. Add salt properly before turning off the fire.
Cooking tips:Listen to my friend. Vinegar is to make the calcium in the beef bones boil out better. As for whether it's true, it's not clear that there are skills in making delicious dishes.