Years ago my mother had an antique electric, wooden handled metal kettle like, popper with a metal lid and a metal crank/stirring rod with a wooden handle. We would put in some oil, add a handful or so of popping corn, put the lid on and listen for the popping to begin, then turn the crank to keep it from scorching. Once we had enough popped and placed into a large bowl, we melted butter in the popper and one person poured it over the popped corn as another person shook the bowl up and down to mix the corn and butter evenly. We added salt and enjoyed it.