2/3 c  Sugar

    2/3 c  Water

      1 c  Grapefruit juice

    1/2 c  Orange juice

      3 tb Grenadine syrup

     28 oz Ginger ale; chilled

  Combine sugar and water in saucepan over low heat. Stir until sugar is
  dissolved. Bring to boil and boil 10 minutes. Cool. Add sugar syrup to
  grapefruit and orange juices. Chill thoroughly. Add grenadine and ginger
  ale just before serving.
  Makes about 1 1/2 quarts
  (C) 1992 The Los Angeles Times