"You cannot make "parched corn" from frozen, "cut corn". The fact that the kernal has been cut open preents the parching process. Parched corn is not just dried corn."
In my method you still throw the dried sweet cut corn into the cast iron skillet with a very little bit of oil and parch it just like corn from the cob. I understand that when the kernal is cut from the cob, the "pressure vessel" effect is lost. Therefore, you loose the puffed effect of true parched corn. That being said, although the shortcut, modern method may not be totally authentic, as the frontiersmen did not have frozen corn to work with, to my taste it is a pretty fair substitute and a decent, if not perfect, representation of primitive trail fare. Sort of like brewing tea on the trail with modern teabags instead of slicing tea off a block and using a teaball.