Grandma Lowe's Caramel Corn

From the Kitchen of: Grandma Lowe

INGREDIENTS
¾ cup brown sugar
¾ cup white sugar
½ cup Karo syrup
½ cup water
1 tsp white vinegar
½ tsp salt
1 cube butter
vanilla
7-8 cups of popped corn

INSTRUCTIONS
Combine brown sugar, white sugar, Karo syrup, water, vinegar and salt in a saucepan and cook to a soft ball. Add butter and vanilla. Pour over popped corn. Mix into balls or serve in bowl.