Provided are an apparatus and method for acquiring information designating a plurality of menu items provided in a meal; reading a characteristic of each of the plurality of menu items provided in the meal, from a menu item database that stores a characteristic for each menu item; generating an classification model for classifying a specified menu item from among the plurality of menu items, based on characteristics of the menu items; acquiring measurement data measured by a sensor attached to a utensil during the meal; and classifying a menu item corresponding to the measurement data, from a characteristic corresponding to the measurement data, using the classification model.