Chicken And Smoked Sausage Gumbo

Ingredients

• 1 (4-pound) chicken, rinsed and dried, cut into pieces
• 1 onion, unpeeled, quartered
• 1 rib celery, cut into 2-inch lengths
• 2 cloves garlic, smashed
• 2 bay leaves
• 2 quarts water, chicken stock or canned low-sodium chicken broth
• 1 teaspoon salt
• 1 teaspoon freshly ground pepper
• 1 cup vegetable oil
• 1 cup all-purpose flour
• 3 onions, chopped
• 2 ribs celery, finely chopped
• 1/2 green bell pepper, finely chopped
• 2 tablespoons minced garlic
• 1/2 teaspoon cayenne, plus more to taste
• 1 1/2 pounds smoked sausage, such as andouille, halved lengthwise, then cut crosswise into half moons
• 1 pound fresh or thawed frozen okra, sliced 1/4 inch thick
• 1 bunch scallions, thinly sliced
• 1/3 cup fresh parsley leaves, chopped
• salt, to taste
• cooked white rice, for serving
• louisiana hot sauce, for serving
• file powder, for serving (optional)