A self-contained food processor is provided for treating a food flow path in the food processor with a solution. The food flow path can be treated without requiring disassembly and reassembly of the food processor and without requiring direct operator input. The food processor includes a controller for directing passage of a solution through at least portions of the food flow path without requiring constant operator oversight. The food processor can employ available positive pressure water supply, such as public utility water pressure to selectively and automatically push solutions, including rinses, backwards or forwards through the food flow path in the food processor.