Angel food candy

1 c  Sugar
      1 c  Dark corn syrup
      1 tb Vinegar
      1 tb Baking soda
      1 lb chocolate almond bark,
           ...melted
 
  In a heavy saucepan, combine sugar, corn syrup and vinegar. Cook over
  medium heat, stirring constantly, until sugar dissolves. Cook without
  stirring until the temperature reaches 300 (hard crack stage) on a candy
  thermometer. Do not overcook. Remove from the heat and quickly stir in
  baking soda. Pour into a buttered 13-in. x 9-in. x 2-in. baking pan. When
  cool, break into bitesize pieces. Dip into melted chocolate; place on waxed
  paper until the chocolate is firm. Store candy tightly covered. Yield:
  1-1/2 pounds