Fragile bones in beef offal are called "beef bones" or "stiff bones and brains". It's an ankle joint of a cow. Because it contains a lot of collagen and elastin, it is tough, chewy and chewy, and it is a delicious food in beef offal. Crispy bones are generally cut into small pieces or pieces, then barbecued, boiled or stewed, or added to hot pot or clay pot rice, which can be dipped in Chili sauce or seasoning to enhance the taste.