In fact, the white of oxtail soup is not boiled oxtail boiled out, mainly bovine bones boiled out. First of all, to select the excellent cattle thigh bone, we use are generally imported, from specializing in imported meat store into the. Looks very clean, the surface is very smooth, first soaked in cold water overnight, (to soak the blood net, oxtail is also) and then boiled over high heat, change the small fire slowly simmer to white, the longer the better.