I usually buy the Jiffy pop, because I just have an electric stove. I have some bags of microwave popcorn. Can I put them on range and like shake it or something?
I don’t have a glass lid to keep popcorn from flying everywhere if I just dump it in a pan.
Squeeze it into a big pot. Stir somehow, or maybe not. Maybe pick it up and shake it while it heats up.
For the future you can get loose popcorn kernels.