This is totally begging the question. If corn won't grow on Rocky Top, then all corn that ever gets there has to be transported from elsewhere. That is true whether corn that gets there is eaten off the cob there or processed into moonshine (the "corn from a jar") at any point. Either way it has to be transported to Rocky Top in some form, wherever it is processed into any corn product. "Corn in a jar" is either transported to Rocky Top already in that form, or else corn (as picked off the stalks) is transported there and then made into corn mash, which is subsequently distilled into the "corn" that comes "from a jar". If corn won't grow there, that is only incidental to the fact that corn is processed somewhere into the corn "from a jar" and in turn consumed on Rocky Top.