In a Dutch oven, over medium heat, combine the oil and flour and stirring slowly and constantly for 20 to 25 minutes, make a dark brown roux, the color of chocolate. Add the onions, celery, and bell peppers and continue to stir for 4-5 minutes, or until wilted. Season with salt and pepper. Add the sausage and bay leaves. Continue to stir for 3 to 4 minutes. Add the stock. Stir until the roux mixture and stock are well combined. Bring to a boil, then reduce heat to medium-low. Cook, uncovered, stirring occasionally, for 1 hour. Add the turkey. Simmer for 2 hours. Skim off any fat that rises to the surface. Remove from the heat . Stir in the parsley and green onions. Remove the bay leaves and serve in deep bowls with rice. you