Cotton... 2 cups airpopped is on the limited list... so it can be eaten --just rarely, not everyday..maybe once a week. Microwaved is on the avoid list...but what you can do is take 2 tablespoons regular popping corn, spray it with pam, put it in a brown paper lunch bag...fold the top over 4 or 5 times, and nuke it like microwaveable ... cheaper, no bad fats or additives and just as tasty...but again, maybe just as a once in a week or two treat.