Abstract: A packaging system comprising a trough and a packaging element separate therefrom for closing the trough, the packaging trough having an outer cardboard structure folded or formed from corrugated board with an insert of a single or multiple layer plastic film, the inner side of each side wall of the cardboard structure being connected by material means to the insert only in its upper part of the side wall, the insert forming a substantially identically shaped, but loose contact surface with the lower part of the inner side of each side wall down to the base of the packaging trough and the trough having at least one gas venting opening.