1 cup. sugar 1 cup. dark corn syrup 1 tbsp. white vinegar 1 tbsp. baking soda also make sure your house has low humidity before making this meaning that all your family and dishwasher and washing machine haven't been running 1. Combine sugar, corn syrup, and vinegar in a large saucepan. Cook, stirring constantly until sugar dissolves. 2. insert candy thermometer. Cook without stirring until candy thermometer reaches 300 degrees (hard crack stage). 3. Remove from heat; stir in baking soda.You must do this fast Pour into a buttered 9 inch square pan.. Cool in pan on wire rack. 4. Break cooled sponge in pieces. Store 2-3 weeks in a tightly covered container **************Biggest Grammy Award surprises of all time on AOL Music. (http://music.aol.com/grammys/pictures/never-won-a-grammy?NCID=aolcmp003000000025 48)