Title: Vinegar icing
 Categories: Desserts
      Yield: 6 Servings
 
      1 c  Brown sugar
      1 c  White sugar
    2/3 c  Water
    1/8 ts Cream of tartar
      2    Egg whites, stiffly beaten
      1 ts Vanilla
      2 tb Vinegar
 
  Combine all ingredients except flavoring and eggs. Boil to soft ball
  stage (236 F).  Pour slowly, beating constantly, onto egg whites. Add
  flavoring. Continue beating until thick and creamy.
  
  Priscilla Gross, Fountainville, PA.