From Wiktionary, the free dictionary
From puff + corn .
puffcorn (uncountable )
A corn snack , visually similar to popcorn , but made with corn meal and baked .
2006 , Peyton Mathie, chapter 27, in Hayden's Corner , iUniverse, →ISBN , page 69 :She tossed the pork rinds into the trash can and settled on some cheese puffcorn curls—not the healthiest things in the world but an improvement upon the former.
2010 , Food & Beverage Market Place , Grey House Publishing, volume 1, 1127 :Additional products include pretzels, regular and cheese puffcorn , cheese curls, corn chips, tortilla chips, pork rinds and salsa dip.
2012 , Kris Vallotton, chapter 9, in Spirit Wars: Winning the Invisible Battle Against Sin and the Enemy , Chosen Books, →ISBN , page 137 :Suddenly, something Henry said caught my attention. “Where'd you get these boxes of puffcorn ?” he asked. “This stuff has no taste at all!”