To make microwave popcorn, place the popcorn kernels in a large brown paper bag and fold the top over twice to seal in the popcorn. Microwave the popcorn for 3 minutes, or until popping is about 5 seconds apart. You don’t want to burn the popcorn, so make sure to listen when the popping stops. Then remove the popcorn from the microwave, transfer it to a large bowl, add salt, and enjoy!