Kernels That Puff Up When Heated
This page is the CodyCross answer for the clue below from Inventions, Group 58, Puzzle 1.
Question is: Kernels That Puff Up When Heated
and the answer is: POPCORN
Word Meaning:
POPCORN — (chiefly uncountable) A snack food made from corn or maize kernels popped by dry heating.
Definitions from Wiktionary.