Abstract: A cylindrical drum containing viscous product, tomato paste, is supported on end with its bung hole at the bottom emptying into a receiving vessel. A stationary spray pipe extends upwardly through the bung hole into the drum when supported on the turntable and includes a number of vertically spaced spray nozzles. Pressurized air is directed through the spray pipe to the top of the drum to remove most of the paste out of the drum. Then, water is sprayed under high pressure from the nozzles while the drum is simultaneously rotated on the turntable until the drum is sufficiently clean for reuse.