Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   1      cup           vermouth
     1/2  tablespoon    lemon juice
     1/4  teaspoon      marjoram
     1/4  teaspoon      rosemary
   1                    onion -- chopped
     1/2                celery -- rib, chopped
   1                    bay leaves
   1 1/2  tablespoons   parsley -- fresh, chopped
   2      pounds        tuna
   1 1/2  tablespoons   butter
   1 1/2  tablespoons   flour

Preparation:

Combine vermouth, juice, rosemary, onion, celery, bay leaf, parsley in a bowl, Add fish. Marinate 5-6 hr. Put in casserole dish, add marinade, salt and pepper. Bake 400F covered 35 minutes until flaky. In skillet melt butter, stir in flour, cook 2 minutes Pour off liquid from casserole to pan. Cook 5 minutes Pour over fish. Serve