The kitchen is the heart of the home, and everyone uses them differently. The kitchen is a room or part of a room used for cooking and food preparation in a dwelling or in a commercial establishment. A modern middle-class residential kitchen is typically equipped with a stove, a sink with hot and cold running water, a refrigerator, and worktops and kitchen cabinets arranged according to a modular design. Many households have a microwave oven, a dishwasher, and other electric appliances. The main functions of a kitchen are to store, prepare and cook food and to complete related tasks such as dishwashing. The room or area may also be used for dining or small meals such as breakfast and entertaining.