I've made popcorn for years, but, only recently discovered the extra step that gets it to all pop at the same time and virtually eliminates any unpopped kernels.
1/3 cup of popping kernels
3 tablespoons of coconut oil
1 tablespoon of butter
Take a substantial saucepan and pop in the coconut oil and let it melt until no white remains. Drop in a couple of popcorn kernels and wait until they pop, then remove the pan from the heat.
The magical extra step - add all the kernels and wait for 30 seconds, then return the pan to the heat. The 30 seconds lets all the kernels heat up to the same temperature and pop at the same time.
Once you hear a few seconds pause between pops remove from the heat.
Remove the popcorn from the pan and add in the butter. Once its melted, pour in the pop corn and stir until its coated. Thenadd a shake of icing sugar and stir - a little goes a long way! If you prefer savoury add salt and stir. Personally my favourite is sweet and salt together.