A Lazy Susan is a turntable (rotating tray) placed on a table or counter top to aid in distributing food. Lazy Susans may be made from a variety of materials. The most common materials are glass, wood, or plastic. They are usually circular and placed in the center of a circular table to share dishes easily among diners. Owing to the nature of Chinese cuisine, especially dim sum, they are common at formal Chinese restaurants both on the mainland and abroad.