Crawfish Filé Gumbo

Ingredients

• 1/2 lb. butter
• 1/2 C flour
• 1 stick celery, chopped
• 1 onion, chopped fine
• 4 sprigs parsley, chopped fine
• 1/2 green pepper, chopped fine
• 4 cloves garlic, chopped fine
• 1 gallon seafood stock or water
• 3 bay leaves
• 1/2 lb tasso, diced
• 1 lb crawfish tails
• 1/2 lb andouille sausage, sliced
• 1 T. thyme
• 2 T filé powder
• rice
• salt and pepper to taste