1/2 lb. popcorn
2/3 c. corn syrup
2 c. sugar
2/3 c. boiling water
2 tsp. cream of tartar
2 tbsp. vinegar
2 tbsp. melted butter
2 tsp. baking soda
2 tsp. vanilla flavoring

Pop corn. Place in large pan. Combine syrup, sugar, water and vinegar. Heat to boiling. Add cream of tartar. Boil to soft crack stage (275-280 degrees). Remove from heat. Add butter, baking soda and flavoring. Pour over popcorn. Form into balls.