Plug in Prestos 04820 Poplite Hot Air Corn Popper and the party begins. In less than 2-1/2 minutes youll have up to 18 cups--two large bowlfuls--of fluffy popcorn with virtually no unpopped kernels. And because the machine uses hot air instead of oil, the resulting snack is healthier and lower in calories. Thats not to say you cant add butter; in fact, the 1/2-cup measuring cup on top of the popper doubles as a butter melter. Simply put in the desired amount of margarine or butter (room temperature is best), and it melts from the heat produced during the popping process.