YSK: If you make popcorn in a pot on the stove, the oil to use is ghee.
Why YSK: Popcorn fans often want a buttery flavor, but plain butter is a bad choice for popping popcorn in a pot, because the proteins and sugars smoke and burn around the same temperature where it's hot enough to pop the kernels.
Ghee, or Indian-style clarified butter, is butter that's been simmered and the milk solids (proteins and sugars) skimmed off. This leaves a clear yellow oil that doesn't smoke when it's heated and doesn't go rancid quickly, but has a distinct toasty butter flavor.
Vegetable oil is either flavorless or faintly bitter, and some high-temperature vegetable oils tend to start polymerizing (i.e. becoming plastic) when heated in small amounts. This is also not good for popcorn.
Good-quality popcorn popped in ghee reliably produces lots of "butterfly" popcorn with few unpopped "duds" and no scorched kernels or batches ruined by smoke.
I've always just used avocado oil. Sometimes coconut oil but that obviously leaves a faint hint of coconut that not everyone likes. I'll try ghee next time but I never heard of anyone trying to make pop corn with just butter in the pan. That sounds like a mistake folks only make once! lol
The makers of my commercial-grade popper recommend coconut oil. Like you, I am interested in trying ghee. It's good to just have a bottle of that stuff handy for lots of things.
For any dairy intolerant or vegan people here you can get a similar effect by clarifying a vegetable spread like Flora and adding salt until it tastes ‘buttery’ enough for you
The point is to be conscious about the shit you're eating and where it comes from, not to demonize butter or animal products on the whole. Factory farming is a horrid practice that I don't support but I've worked with local livestock outfits for 15 years and see the care they put into production. Not every pound of butter is wrought on a life of pure suffering, and to reject the fundamental role of death in life's process is just a bizarre and sterile approach to living.