Add the whole chicken to a large pot and cover it with 1 gallon of water and simmer on low to medium heat for 75 to 90 minutes or until the chicken is completely cooked.
In the meantime, add some 3 tablespoons of vegetable oil to a large pot over medium heat and sauté the sausage slices for 5 to 6 minutes, or until they have sear marks. Set them aside in a bowl or on a plate.
Add the onions to the pot and cook over low heat until very well caramelized, which usually takes 45 to 60 minutes.
Next, add the celery and bell peppers and sauté over medium heat for 6 to 8 minutes or until the vegetables are a little brown and tender.
Stir in the garlic and cook just until it’s fragrant, which takes 45 to 60 seconds.
Set the sauteed vegetables to the side on a plate or in a bowl and then return the pot to the burner but do not turn the heat on just yet.
Go Back to the pot with chicken and carefully remove the chicken and set it to the side on a large plate. Cool it slightly.
Strain the chicken stock through a chinois or fine-mesh strainer. Return the chicken stock to the cooktop and keep it warm over low heat.
Remove the skin from the cooked whole chicken and then remove as much meat as possible from the breasts, wings, thighs, and drums. Roughly chop the pulled chicken and set it to the side.
Next, go back to the pot where the trinity vegetables were cooked and add in the oil over low to medium heat and heat for 2 to 3 minutes.
Slowly sprinkle in the flour while continuing to whisk until combined.
Frequently whisk or stir the roux in the pot until it reaches the dark roux stage. It should be the color of a dark penny. This will take around 30 minutes to achieve.
Add back in the cooked vegetables and stir until combined. Sprinkle in the Cajun seasonings and stir to combine.
Pour in 2 to 3 ladles of warm chicken stock into the pot and mix it with the vegetables, spices, and roux until it becomes dark and creamy.
Now pour in all the chicken stock along with the roughly chopped chicken and seared sausage slices. Next, add in the bay leaves and sliced okra and stir it well.
Bring the mixture to a boil over high heat to help activate the roux to help thicken the stock. Once boiling, turn the heat down to low medium and on a lid and cook it for 1 hour.
Adjust the seasonings with salt and pepper. Serve, store, or keep it warm over low heat
Notes
Make-Ahead: You can make this gumbo up to 1 day ahead of time. Follow the reheating instructions below.How to Store: You can store this covered in the refrigerator for 4 to 5 days. This will also freeze covered for up to 6 months. Thaw in the refrigerator before reheating and serving. How to Reheat: Add the desired amount of gumbo to a medium-sized saucepot and cook over low heat until hot. Adjust the seasonings with salt and pepper and serve.If you can’t find andouille sausage, try, and use a good smoked sausage.When making the stock, you can add any vegetable scraps if it’s not bell peppers.If you aren’t pressed for time, you can simmer the gumbo for an additional hour.This soup will get better with time.