Yes it’s really a thing, popping popcorn on a campfire. It’s easy to do. Impressive as heck. And the popcorn gets this smoky flavor from the, well, from the smoke. It’s crazy.
Get an 18″ piece of heavy duty aluminium foil. Put 2 tablespoons of popcorn kernels in the middle of one half of the foil. Drizzle with 2 tablepsoons of oil.