In a large, heavy saute pan, heat 2 tablespoons of the oil over medium-high heat. Add the chicken livers and sausage and cook, stirring, until the meat is browned, about 6 minutes. Add the remaining tablespoon of oil, the onion, bell pepper, celery, garlic, Essence, salt and pepper, and cook, stirring, for 5 minutes. Add the stock and bay leaves and scrape the bottom of the pan to loosen any browned bits. Bring to a boil, then lower the heat and simmer for 5 minutes. Add the rice and stir thoroughly. Cook until the rice is heated through, about 5 minutes. Remove from the heat and remove the bay leaves. Stir in the parsley and serve.
Combine all ingredients thoroughly and store in an airtight jar or container.
Recipe from New Orleans Cooking by Emeril Lagasse and Jessie Tirsch, Published by William and Morrow, 1993.