Peel shrimp, rinse and drain well. Use heads and tails to make seafood stock (2 qts water, 1 medium onion, 1 clove garlic, 1 rib celery combined. Bring to boil and simmer 4-8 hours, repleneshing liquid to keep at 1 qt). Refrigerate shrimp, mix seasoning mix in a bowl and set aside. In a 4 qt heavy soup pot melt margarine on medium heat. Add onion, celery and green peppers. Turn heat to high and stir in file, tabasco, garlic and seasoning mix. Cook 6 minutes, stirring constantly. Reduce heat to medium and stir in the tomato sauce. Continue cooking for 5 minutes, stirring constantly. Continually scrape the bottom to avoid scorching. Add the stock and bring gumbo to a boil. Reduce heat and simmer 45-60 minutes stirring occasionally. Add the shrimp, crab and oysters, cover and turn off heat. Leave cover till seafood is poached (6-10 minutes). Serve immediately. |