A continuous low temperature food pasteurization system (10) includes a conveyor system (20) for conveying food products (FP) through a pasteurization chamber (40). A pre heater (140) may be located upstream from the pasteurization chamber, and an optional post heater (160) may be located downstream from the pasteurization chamber. A chiller and/or freezer (100) rapidly chills and/or freezes the food product after pasteurization as the conveyor system conveys the food product through the freezer. A control system (250) controls the operation of the pasteurization system to ensure that a desired percentage of pathogenic microorganisms present on the surface and/or within the interior of the food product are killed.