I think popcorn could be feasible. It's definitely not in an CUL recipes, but we do have millioncorn, and popcorn's not hard to make. A pan, some dried kernels and a fire and you got some popcorn. Add some melted butter, and you have butter flavored popcorn even. Or oil, however you take your popcorn (I personally use coconut cooking spray, and salt sticks super well to it). Eorzea also has caramel, sugar, etc, so you can make different varieties to boot.
Most great foods are made by accident, after all!
Most great foods are made by accident, after all!