1, tubular bone is a big bone with a hole in the middle, which is rich in bone marrow and collagen; However, keel and umbrella bone have less bone marrow and less collagen content.

2. The bone is rich in bittern and the bittern soup is bright in color, which is the best bone for bittern. However, keel and umbrella ribs have a poor boiling halogen flavor, and the boiled halogen soup is of average color. So just boil the beef bone with salt water.