Abstract: The present invention relates generally to a system for packaging foodstuffs such as beef, pork, seafood and poultry products wherein the system provides an apparatus and various methods for exposing the food products to one or more gases, or a blend of gases, in a series of steps controlling the pressure of the chamber during one or more flushing operations wherein at least some of the gas or gases associated with at least one flush are allowed to at least partially penetrate the structure of the food product, and thereafter sealing the food product in a container.