An ported marinade injection system useful for injecting flavoring fluids into vacuum-packaged meats. The apparatus may include a package couple, a port support couple, an injection port, a self-sealing port, and a port cover. The apparatus may be used by attaching the package couple and the port support couple to a package, attaching the self-sealing port and the injection port to the port support couple, injecting a marinade or other flavoring, and covering the port to seal the flavoring within the package.