Source for comestible cracked corn
I've seen them called "pop pops". NatureBox sells them:
https://naturebox.com/product/sea-salt-pop-pops

Trader Joe's has a variant:
https://www.amazon.com/Trader-Joes-Partially-Popped-Popcorn/dp/B00WOQ31AY

There's also a brand called "half pops" at halfpops.com.

Googling turned up a recipe for making them, but I haven't tried it:
http://www.jenosmon.com/blog/half-popped-popcorn/