1. An information processor comprising circuitry configured to: detect at least a size of a plurality of individual plates in an image, each of the individual plates appearing in the image as individually supporting one of a plurality of foods; generate a characteristic amount identifying the food supported by each of the individual plates detected; generate a combined characteristic amount corresponding to the image by combining the characteristic amount for at least two of the foods supported by the individual plates; determine a label corresponding to the combination of the at least two of the foods supported by the individual plates appearing in the image based on the generated combined characteristic amount; and recognize the combination of the at least two of the foods-supported by the individual plates appearing in the image based on the determined label.