allrecipes, but I've adapted the directions a little, based on my experiences.
1/4 cup vegetable oil
1/4 cup white sugar
1/2 cup unpopped popcorn kernels
Salt, to taste
Add 3 popcorn kernels and vegetable oil to a large pot (about 10 inches across). Add the lid to the pot and heat over medium heat until the 3 kernels pop. Remove from the burner. Add the sugar and quickly stir with a wooden spoon. Immediately add the 1/2 cup popcorn kernels and replace the lid. Put back on the burner and heat until corn begins to pop. Put on oven mitts and hold the lid in place while you shake the pot for 3 seconds, place on the heat for 3 seconds, then shake for 3 seconds. Continue, alternately shaking the pot and heating until pops slow. Remove from the heat and let the last few kernels continue to pop before you remove the lid. Sprinkle with salt and carefully pour into a large serving bowl. Makes 5 servings (2 cups each).
NOTES: We also tried this with brown sugar and none of us liked it as well as with white sugar as directed:)