Pop the popcorn using your usual preferred method. You can use an air popper, or, if you like, you can pop the popcorn in a large, heavy pot with a tight-fitting lid. Coat the bottom of the pan with 3 tbs. of oil for popping (I like to use coconut oil as my popping oil) and heat over low heat. Drop in 1 kernel of corn. When it pops, add the remaining corn. Cover and shake the pan until all the corn has popped.