In a soup supply apparatus, when a hopper upper lid and a vertical rotation shaft that has a stirring blade are to be cleaned, at least the hopper upper lid and the vertical rotation shaft are configured to be easily disassembled and to be easily coupled after cleaning as well. In addition, a cylindrical first engaging body on an output shaft side and a cylindrical second engaging body on the vertical rotation shaft side are configured as to be easily and reliably engaged by a free end portion of an upper-portion housing box of a machine body lowered in a downward direction. Furthermore, the apparatus is configured to support the vertical rotation shaft to the hopper upper lid in a stable state.