So, I put one of these (the Butter kind) in the microwave. I watched and listened. The bag puffed up about halfway, didn't vent the steam and started to smoke, all in less than two minutes. When I took the bag out, the bottom was scorched black and a piece of the side of the bag had been blown out/burned through.I figured it was because it didn't vent, so I tried another one. This one puffed up right away and steam did vent out of the top. But still, when I took it out when the popping got slow, the bottom of the bag was burnt as were some of the kernels inside. The not-burnt ones tasted fine.I may try one more time and just stop the microwave at a little over a minute, regardless of how much it is still popping. But it looks like "back to the drawing board" for Pop Secret on this one.