A packaging system useful for roast and ground coffee, having a container with a closed bottom, an open top, and a body enclosing a perimeter between the bottom and the top. An annular protuberance is disposed upon the body and is continuously disposed around the perimeter of the body proximate to the top. The protuberance forms a surface external to the body. The surface is substantially perpendicular to the longitudinal axis of the container. A flexible closure is removeably attached and sealed to the protuberance so that the closure seals the interior volume of the container.