12 c. popped popcorn
2/3 c. water
2/3 c. Karo syrup
1 c. butter
1 c. sugar
1/2 tsp. salt
1 tsp. vinegar
1 tsp. vanilla

Pop popcorn, put in large bowl. In saucepan combine water, Karo syrup, butter, sugar, salt and vinegar. Cook over medium heat, stirring constantly until it reaches a soft ball stage (check by dropping a little in cool water to see if it balls). Take off heat, add vanilla. Pour over popped popcorn and mix. Butter hands, form into balls. Caution: it will be hot.