Do not rely on the popcorn button on your microwave. It is very important to follow the instructions on the box. Because microwave ovens perform differently, the popping time may vary with each microwave. It is important to monitor the time carefully and listen for the popping to slow down; about 2 seconds between pops indicates the bag is done. DO NOT LEAVE THE MICROWAVE UNATTENDED WHILE POPPING. STAY AND LISTEN.