Homemade popcorn is cheaper and healthier--and it's infinitely tastier. It's also a lot of fun to make. You yellow vs white popcorn only need two ingredients (three if you count salt, but that's a topping). My daughter loves it when I pop corn on the stove. Popcorn is at its best a few minutes after it has been popped. The more you leave popcorn uneaten the more moisture it absorbs from the air. And second, using too much oil can also be the reason for chewy popcorn.