Add 3 kernels of popcorn to a pan, add oil to a depth to come up halfway up the kernels. Place on medium-high heat. As soon as the kernels pop, add popcorn, place lid on pan.

Once these kernels begin to pop, shake pan constantly (or turn crank on Whirley Pop) until the popping slows. Once there is a second between pops (count 1001), remove from heat and immediately pour on to a tray or large bowl.

Season with salt and drizzle with melted butter, if desired. Toss.