Saute 4 large minced onions in one stick of butter. Add 2 tablespoon of flour and brown slowly until it turns a dark brown. Then add 2 quarts of hot stock. Add one pod of minced garlic, 1 cup of minced green pepper, 1 cup of diced okra, 1/2 cup of minced celery, 3 bay leaves, 4 teaspoon of thyme, salt and pepper as desired. Stir and simmer 2 hours (I use a crock pot). Then add 1 lb. of peeled raw shrimp. Simmer 20 minutes. Add 2 cups of cooked crab meat. Simmer 15 more minutes. Serve hot over rice, sprinkle with file' gumbo powder (can be found in some spice sections or can be left out).