Popcorn Balls - cooking recipe

Ingredients

1 c. Karo
1 c. sugar
1/4 c. water
1 tsp. vinegar
2 Tbsp. butter
2 qt. popcorn

Preparation

Combine first 4 ingredients; stir constantly.
Boil to hard ball stage (260\u00b0).
Add butter and pour over popcorn.
Form into balls.