ALL NATURAL NO MSG Can Kernel Seasons be used on any type of popcorn? Microwave Popcorn: Generously sprinkle 1 capful onto freshly popped popcorn. Close bag and shake well. Air-Popped Popcorn: Spray popcorn with fat-free vegetable oil spray to help the seasoning stick. Generously sprinkle 1 capful of seasoning onto popcorn.