Abstract: A method of achieving extended shelf life for a food includes enclosing the food in a discrete container of flexible or foldably formable material, wherein the shape of the container includes predefined crease lines for enabling the formation of the container into at least the following two container positions: a) a first container position obtained by the formation of folds along predefined crease lines such that opposing side wall panels of the container are arranged in relation to one another such that the distance between the side wall panels defines a first distance and b) a second container position obtained without the formation of folds along the predefined crease lines such that opposing side wall panels of the container are arranged in relation to one another such that the distance between the side wall panels defines a second distance. The first distance between the side wall panels is less than the second distance between the side wall panels.