01 - Heat the vegetable oil in a large heavy-bottomed pot over medium heat. Gradually whisk in the flour, stirring constantly. Cook until the roux achieves a deep chocolate brown color, approximately 15–20 minutes. Monitor carefully to prevent scorching.
02 - Add the onion, bell pepper, and celery to the finished roux. Sauté for 5 minutes until vegetables begin to soften. Incorporate the minced garlic and continue cooking for 1 minute until fragrant.
03 - Add the chicken pieces and sliced sausage to the pot. Toss thoroughly to coat with the roux and vegetables. Cook for 4–5 minutes until the meat develops a light brown sear.
04 - Incorporate the tomatoes, okra, bay leaves, smoked paprika, thyme, oregano, cayenne, black pepper, white pepper, and salt. Stir well to distribute spices evenly throughout the mixture.
05 - Pour in the chicken stock and Worcestershire sauce. Use your spoon to deglaze the bottom of the pot, releasing any browned bits. Bring to a boil, then reduce heat to low. Simmer uncovered for 50–60 minutes, stirring occasionally to prevent sticking.
06 - Remove the bay leaves and discard. Taste the gumbo and adjust seasoning with additional salt, pepper, or hot sauce as desired.
07 - Ladle the hot gumbo over steamed white rice in serving bowls. Garnish generously with sliced spring onions and fresh chopped parsley.