Method and apparatus of producing sterile liquid food products are provided. The method comprising the steps of: aseptically sterilizing heat sensitive food materials using a sterile filter filling an aseptic container having a plastic member with the sterilized heat sensitive materials heat sterilizing non-heat sensitive food materials using a sterilization process in a production line connecting the filled aseptic container to the product line using a heat sealer that creates a sterile connection between the plastic member of the aseptic container and a fluid flow path into the production line feeding the sterilized heat sensitive food materials through a dosing valve and mixing the sterilized heat sensitive food material with the non-heat sensitive food materials that have been sterilized and filling a second container with the mixture.