Perfect popcorn!

The secret to make perfect popcorn and the way to make all your popcorn pop is:
-heat the pan first
-add vegetable oil just enough to cover the bottom
-heat up the oil
-add the popcorn grains just enough so that the oil covers them (one layer covering the bottom)
-close the pan really good and let it heat up on high temperature
-when you start hearing the popcorn popping, decrease the temperature(the flames)
-when you stop hearing any sound, turn off and serve with salt :)

This method guarantees that 90% of the grains to pop! :):)