This umami-rich salt packs more flavor into popcorn than any store-bought mix. The seasoning basically makes itself, too—simply bake the mushrooms until dry, and then mix with salt, Parmesan, and rosemary. For the ultimate movie-night treat, give the microwave a break and pop your popcorn on the stove. (It’s easy!) Just heat canola or vegetable oil over medium-high heat, add the popcorn kernels, cover with lid, and gently but continuously shake the pot until the popping slows. Let the popcorn rest, covered, for another minute, until the final kernels pop. Top with the shiitake salt, and enjoy.