Old-Fashioned Stove Top Popcorn
Adding salt during the cooking (popping) process will harden the end product. For fluffier pop corn add the salt to the warm finished product.
Getting More POP Out of Your Popcorn
From my experience, setting the stove top pan on medium heat only. The higher heat generates a faster, yes, but makes the finished product smaller and harder. (Thus not as tastey.) Pour the oil so it barely covers the bottom of the pan. You actually need less...