There are two main methods of counterfeiting low-priced fake mutton. One is to mix pork and mutton together. "Now the mutton that is cut and sold is selling very fast, and some people blatantly put pork into the slicer." The second is to directly mix pork and duck with sheep oil, essence and mutton powder. Some of them are also mixed with pigments, so it is difficult for consumers to identify counterfeit mutton. Zhang Dequan, an expert in mutton research and deputy director of the Food Science Research Center of the Agricultural Products Processing Institute of China Academy of Agricultural Sciences, told the reporter that the processing technology of fake mutton is very clever now, not only the taste is imitated, but also some vendors add sheep blood protein to pork and duck meat, and even the color is not bad at all. "Generally speaking, the quality of meat used in raw meat products will be better, because the color and texture of meat are obvious to consumers.