White Popcorn Balls

1 c Sugar
1/2 c White corn syrup
1/2 c Water
2 tb Butter
1/2 tb Vinegar
1/2 c Corn, popped
1 c Chopped toasted pecans

Put sugar, corn syrup, water, butter and vinegar in a heavy saucepan. Cook to about 260 degrees F. on a candy thermometer. Pour over the popped corn and toasted pecans. Stir to coat, butter hands, and make balls.