First, some people pretend to be pork. Pork posing as mutton is the most common practice. Some people make mutton kebabs with pork and other seasonings to pretend to be mutton kebabs. Mutton meat is relatively tight, fat meat and lean meat are mixed together, and the mutton skewers made are relatively tight. The mutton skewers that pork pretends to be, fat meat and lean meat are separated, and the meat quality is not as tight as mutton.
Second, some people pretend to be chickens and ducks. Some vendors pretend to be kebabs with chicken and duck meat. They combined chicken, duck meat and duck oil to make mutton kebabs. What color are these kebabs? If you pay attention to the observation, you can see that the real mutton string is darker. But it's hard to tell the difference after adding seasoning. You can check it in the butcher's cabinet.
Third, the authenticity can be judged by the color and smell of meat. If you are careful, you can still find the difference between true and false mutton kebabs. Real kebabs have a pungent taste, and even with a lot of seasonings, they should have the original flavor of mutton. Fake kebabs only have the flavor of seasoning, almost no flavor of mutton, and they can also be distinguished from the real ones by smell.