Butterscotch Candy - cooking recipe

Ingredients

1 c. sugar
1/2 c. dark Karo syrup
1/2 c. butter (no substitute)
2 Tbsp. boiling water
1 Tbsp. vinegar

Preparation

Boil together sugar, syrup, butter and water until brittle stage (300\u00b0).
Add vinegar and stir hard.
Pour into a buttered pan and mark in squares with a knife when slightly cool and not hard.