Pete..i got the best frozen corn,not the store brand,and "parched" it in a dry fry pan---no oil--until it had a semi brown look.not burned.i kept the corn moving around in the pan with a fork and then cooled it on a plate.the corn is now hard as a rock!..to grind it i put it thru a electric coffee grinder.when i did the post some years ago someone came back with parched corn as a snack that could be bought at his local stores.i forget where.the trick is how you eat it.taken dry and then washed down with cold water it swells in the stomach to give you a full feeling.1900's testing showed it to be high in everything needed to make it a single main food item..