since you used prosciutto for an example, we ought to discuss how absurd it is to need a special container to keep slices of cured meat fresh in the first place. the block of prosciutto is already a container! perhaps the big block needs some sort of protection in transit to meet modern food safety requirements, but buying 80g at a time of prepackaged prosciutto creates a needless inefficiency. we ought to be able to go to the meat counter and buy a few days worth of prosciutto wrapped in paper.