Put in water to soak, the purpose is to soak out the blood in the meat; time at least 2 hours or more, in the middle of the water can be changed twice, which can not only obviously remove impurities in the meat to achieve the purpose of deodorization; but also make the beef in the stewing of the meat without the obstruction of the blood to absorb more fully the soup becomes more soft and tender, the taste will also be soft and juicy!