A mixer includes a tub defining a receiving cavity, a loading opening through which meat product can be introduced into the receiving cavity, and a pair of exit openings through a bottom wall of the tub through which meat product can be removed from the receiving cavity; a paddle assembly; first and second openable doors; and a plurality of injectors configured to supply a fluid into the tub. The paddle assembly agitates meat product within the tub. Mixed meat product can exit the tub through the opened doors.