A control method for controlling a terminal device includes using a memory that manages cooking appliance logs each including at least a cooking time of a food and first information indicating an age-related deterioration level of one of the cooking appliances to acquire, from among candidates of a recommended cooking time calculated based on the first information and the cooking time and stored in a server apparatus, third information indicating a recommended cooking time corresponding to second information indicating an age-related deterioration level of the first cooking appliance, displaying, on a display, a user interface that allows a user to select one of the candidates including at least the recommended cooking time for the first cooking appliance using the third information, and outputting a setting command for setting the selected cooking time to the first cooking appliance upon detecting selection of one of the cooking times through the user interface.