I saw an interesting way to parch corn buy using an air popcorn/coffee roaster. Certainly not the original way but fairly easy. Wife is hesitant to let me use her old one
so I ordered an inexpensive one on ebay for $20.
Maybe some remember Dude's discussion with Alan and Christopher. https://youtu.be/F9ekge-HIl8
Now I had read Britton Davis book on the Geronimo campaign and mentioned parched wheat. I believe that it was ground for pinole but not sure. Is it possible? notice this quote from 1Samuel 17:17
17Then Jesse said to David his son, "Take now for your brothers an ephah of this roasted grain and these ten loaves and run to the camp to your brothers.
New American Standard Bible
So they used roasted grains in places other than the Americas and a long time back. I don't know why Dude doesn't remember this as he taught David to use a sling.
I have some wheat I will try after I get the popper here and try the corn. You should be able to find one at a garage sale or Goodwill type place if you don't have one or like me not allowed to use it. Remember some corns pop as does amaranth grain, sorghum, quinoa and millet.
Rock-a-hominy is the eastern term for pinole and I believe it was the original form of cold flour. Nowadays cold flour is thought to be a form of corn meal mush most of the time.