To start, heat about a tablespoon of oil in a large pot over medium-high. Add a single kernel and put the lid on the pot. Wait until the kernel pops before adding the rest.
Once the kernel has popped, add the rest of the popcorn kernels in, then put the lid back on. At this point, vigorously shake the pot back and forth to ensure all the kernels are coated in oil.
Continue to shake the pot over medium-high (to prevent burning) until all the kernels are popped. You'll know the popcorn is done when there are about 3 seconds between popping sounds.
Once the kernels have finished popping, remove your pot from the heat. Transfer popcorn into a large mixing bowl and allow it to cool, about 1 minute.
Lastly, spray a little oil on one surface of the popcorn, sprinkle salt and nutritional yeast over top, toss the popcorn, and repeat until you achieve desired results. Enjoy!