In a 32-quart stockpot, bring the seafood stock to a boil. Add the onions, bell pepper and celery. Add the Creole seasoning, gumbo file, thyme and basil. Bring back to a boil and boil for about 30 minutes.
In a cast-iron skillet, heat the vegetable oil. When the oil is hot, stir in the flour and continue to cook, stirring, until the mixture (roux) is dark brown in color (the color of milk chocolate). Add the roux to the stockpot and stir in until dissolved. Continue to boil for 15 minutes, then add the chicken thighs. Continue to add the remaining proteins every 15 minutes in the following order: smoked sausage, hot link, ham, crab and shrimp. After the shrimp are added, cook for another 15 minutes, then remove from the heat.
This recipe was provided by a chef, restaurant or culinary professional. It has not been tested for home use.
Recipe courtesy of Harold & Belle's, Los Angeles, CA