What is the Missing Ingredient?
FIREHOUSE GUMBO

Ingredients
     1 whole _______, cut into serving pieces (about 2 1/2 pounds dressed)
1 cup plus 2 tablespoons vegetable oil
1 1/4 cup flour
1 1/2 cups chopped onions
1 cup chopped celery
1 cup chopped bell peppers
Salt
Cayenne
1 pound smoked sausage, such as andouille or kielbasa, cut crosswise into 1/2-inch slices
3 bay leaves
6 cups dark chicken or other stock
2 tablespoons chopped parsley
1/2 cup chopped green onions
1 tablespoon file powder
2 cups cooked long grain white rice
Essence