Popcorn comes from a specific type of corn kernel that expands and puffs up ... Popcorn is naturally low in calories and fat, and it's 100% gluten-free, says Largeman-Roth. It’s also naturally ...
Dried corn kernels are readily available from most supermarkets. Commercially-produced ready-to-cook popcorn kernels are also available, sealed in bags that you just put in the microwave.