Place the coconut oil in a large, heavy-bottomed pot over medium-high heat and let it melt.
Add 3 popcorn kernels to the pot and cover with the lid; wait until those kernels pop to confirm the oil is hot.
Once the test kernels pop, add the popcorn salt and the remaining 1/2 cup popcorn kernels, swirl to coat, then cover the pot and remove it from the heat for 30 seconds.
Return the pot to medium heat with the lid slightly ajar and gently shake the pot occasionally so kernels move while popping.
When popping slows to about 2–3 seconds between pops, remove the pot from the heat and transfer the popcorn to a large serving bowl.
Put the hot empty pot off the heat, add the melted ghee to the pot to warm it, then drizzle the ghee over the popcorn and toss to coat.
Taste and add more salt if desired, then serve immediately.