Mac and cheese flavor comes from a powder. At least the gourmet mac and cheese that I like to eat. You go shave Manchego on your own time, pal.
So it's kinda amazing it took THIS long for a company to make this mash-up: Act II just created a new flavor of microwave popcorn that tastes like mac and cheese.
There's no word on exactly when this will hit stores . . . all the reports say is that it's coming soon.
(Here's a picture.)