Of course, you know that just being airless will not stop perishables such as meat and/vegetables from rotting. A corpse, for example, will still decompose and/or rot in an airless void. Cold and airless slows it significantly, but doesn't stop it completely.<br/><br/>I seem to recall someplace that a person put into a bag of holding, for example, will sufficate after so many minutes because the air in the space is used up, so it may stand to reason that dementional spaces aren't airless, but limited in the amount of air trapped inside. I've played games where people have hidden in dementional spaces, the old Sanctuary spell of 2nd ed comes to mind, a space is created and holds air and so on for so many hours, but that's a spell for it's intended purpose.<br/><br/>Unless you're buying fresh, uncured meats and vegetables, most will stand up for weeks or months sitting on a tabletop. They will grow mold, but cut away the mold and a salt cured ham, for example, will be digestable for weeks.