I have made hundreds of batches of this...
Use a stovetop popper that stirs like a Whirley-Pop...
1/2 cup popcorn
3 Tbl. oil
1/3 cup sugar
1/2 tsp. popcorn salt
add the corn and oil to the popper, stir slowly and watch for first kernel to pop...add sugar and salt quickly and stir contantly until popping slows...dump into bowl, enjoy...