In a large pot (or whirly pop) add coconut oil and 3 popcorn kernels and turn on medium-high heat. Once the 3 kernels have popped, the oil is hot enough to continue.
In a small bowl, add remaining popcorn kernels, sugar and salt and mix together. Add to pot. Shake pot every few seconds (or turn the handle if using a whirly pot) to ensure kernels don't burn and continue until popcorn is popped (about 3 minutes).
Immediately remove from heat and spread out on foil or a flat surface to dry and cool for a couple minutes.