Instructions

  1. In a small saucepan, combine the 1 cup pineapple juice, vinegar, soy sauce, sugar and ketchup.
  2. Stir over moderate heat until simmering.
  3. Dissolve the cornstarch in the 1/4 cup pineapple juice or in water.
  4. Stir into sauce; cook until thickened, stirring constantly.