From the appearance: A good raw-cut steak has no spoiled smell, the meat is red, tender and shiny, the fat is white or milky yellow, and it is not sticky to the touch. It will instantly melt when you press it. It bounces up, while the "reconstructed steak" is dark red and the fat is dull.
Look at the description of the steak packaging bag: If the ingredient list on the package only has the word "beef", it means that it is the original cut steak; if the ingredient list includes vegetables, soy sauce, black pepper juice, etc., there is no " The three words "carrageenan" indicate that it has been pickled and can be fried directly, which is called modulated steak. If edible glue is marked in the ingredient list, it means that the steak is synthesized by glue.
Look at the shape of the steak and the texture of the meat: the original cut steak is a whole piece, with a layer of white tendons on the outer layer, and the lines are all in the same direction; if there are no white tendons on the outer layer, If there are no lines, or the lines are very messy, it is probably a glue steak, assembled with glue.