A cooking device (1) has a vapor generating device (5) for supplying vapor to a heating chamber (2), a heater (14) for changing saturated water vapor generated by the vapor generating device to superheated water vapor, and a circulation fan (14) for circulating gas in the heating comber (2) through a circulation duct (10). A control device (60) for controlling the entire cooking device (1) performs, according to selection by a user, a bacteria elimination mode such as a resin tableware mode, a ceramic mode, or a kitchenware mode, and the modes have different water vapor temperature settings for different categories of objects from which bacteria are to be eliminated. When a bacteria elimination key (70) provided at an operation section (3b) is pressed, the cooking device (1) enters an operation for selecting among the bacteria elimination modes.
