Post Office Candy
["1 c. boiling water", "2 c. sugar", "3 Tbsp. white vinegar", "3 c. pecan halves (warm)"]
["Put sugar in 2 to 3-quart saucepan.", "Add boiling water and white vinegar.", "Cook to hard crack stage.", "Add pecans; mix and spread on buttered platter."]
["boiling water", "sugar", "white vinegar", "pecan"]