A method is for handling a sterilized food product and includes securing an aseptic fitment to a filling port of an intermodal container including a rigid shell having an elongate shape with opposed closed ends, and at least one frame assembly supporting the rigid shell. The method also includes sterilizing the intermodal container, and aseptically filling the sterilized intermodal container with the sterilized food product through the aseptic fitment. The method may also include sealing the aseptic fitment after aseptic filling. A related intermodal container and filling station are also disclosed.