Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   2      tablespoons   butter
   2      tablespoons   olive oil
     1/4  cup           flour
   1      cup           onion -- chopped
     1/2  cup           celery -- chopped
   1      clove         garlic -- minced
   4      cups          fish stock or clam juice
  12      ounces        tomatoes -- canned
     1/2  cup           white wine
   1      tablespoon    lemon juice
   2      tablespoons   parsley
   1      whole         bay leaf
     1/2  teaspoon      salt
     1/2  teaspoon      cayenne pepper
     1/2  teaspoon      saffron
   2      pounds        fish fillets -- cut in 1-1/2" chunk
   1      pint          oysters -- reserve liquid
     1/2  pound         shrimp -- peeled and deveined
   1      cup           crab meat

Preparation:

Melt butter with olive oil in a large pot. Saute onion, celery, and garlic until vegetables are tender. Sprinkle with flour. Stir and cook until light brown. Stir fish stock or clam juice with reserved oyster liquid slowly. Add stock, tomatoes, wine, lemon juice, herbs, and seasonings. Simmer on low heat for 1 hour. Add fish and cook for 10 minutes. Add shrimp, oysters, and crab meat; cook 5 more minutes.