Yeah, I know posting a “recipe” for salt is lame, but not as lame as paying $3 for a tiny jar of “Popcorn Salt.” Also, I know that salt is not a snack (at least not for most people), but I don’t have a better category for it, and it goes with the popcorn recipe, so I put it here . . .
Popcorn Salt is just Kosher Salt that’s been ground with a finer particle size to stick to the popcorn better and you can make your own, pretty much for free.
Kosher Salt can be easily ground in a mortar and pestle, and although it’s also possible to do in a food processor with a metal blade, it will severely scratch the work bowl (think frosted glass) as well as dull the blades.
Put the desired amount of salt in the bowl, and grind until really fine.
Use a stone mortal and pestle. If you don’t have one, buy one. They’re about $10 at any Asian grocery store.
Note that the reason I specify Kosher Salt is because it contains no additives like iodine, that can effect the flavor of the food.