Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   3      pounds        flounder fillets
   2                    onions -- chopped
     1/4  cup           butter
   2      tablespoons   flour
   1      can           beer
   2      tablespoons   brown sugar
   5                    peppercorns
   2                    cloves
   1      teaspoon      Worcestershire sauce
   1      tablespoon    vinegar

Preparation:

Cut fillets in serving size pieces. Brown onions in butter ; add flour; cook 3 minutes. Add beer and remaining ingredients except vinegar. Cook over low heat, stirring until thickened. Add fillets, cover and cook, until fish is done. Add vinegar, cook 2 minutes longer. Serve.