An artificial intelligence server can include a communication interface configured to communicate with a display device and a refrigerator; and a processor configured to in response to the display device displaying an image including a dish, acquire dish information about the dish included in the image displayed on the display device, receive, from the refrigerator, available ingredient information about ingredients in the refrigerator, and transmit, to the display device, information about making the dish by using the ingredients in the refrigerator.