Courtbouillon
A classic Louisiana dish where tender fish fillets are gently poached in a rich, roux-thickened tomato gravy with the Cajun holy trinity. Hearty, flavorful, and perfect over a bed of fluffy white rice.
For 4 servings
7 steps. 50 minutes total.
- 1
Step 1
- a.Prepare the Fish and Vegetables: Pat the fish fillets dry and season them with 1 tablespoon of the Cajun seasoning. Set aside. Ensure all your vegetables (onion, bell pepper, celery, garlic) are chopped and ready, as the roux-making process requires constant attention.
- 2
Step 2
- a.Make the Roux: In a large Dutch oven or heavy-bottomed pot, heat the vegetable oil over medium-low heat. Gradually whisk in the flour until smooth. Cook, stirring constantly with a flat-edged wooden spoon or spatula, for 10-15 minutes, until the roux reaches the color of peanut butter. Scrape the bottom and corners of the pot continuously to prevent scorching.
- 3
Step 3
- a.Sauté the Holy Trinity: Add the chopped onion, bell pepper, and celery to the hot roux. Stir well to coat. Continue cooking and stirring for 5-7 minutes, until the vegetables soften and become translucent. Add the minced garlic and cook for another minute until fragrant.
- 4
Step 4
- a.Build the Sauce: Stir in the tomato paste and cook for 2 minutes, allowing it to caramelize slightly. Add the diced tomatoes with their juices. Slowly pour in the warm seafood stock, about a cup at a time, whisking constantly after each addition to ensure the sauce is smooth and free of lumps.
- 5
Step 5
- a.Simmer and Season: Add the remaining 1 tablespoon of Cajun seasoning, bay leaf, dried thyme, cayenne pepper, kosher salt, and black pepper. Stir well. Bring the sauce to a gentle boil, then reduce the heat to low, cover the pot, and let it simmer for 25-30 minutes to allow the flavors to meld and deepen.
- 6
Step 6
- a.Poach the Fish: Gently nestle the seasoned fish pieces into the simmering sauce, ensuring they are mostly submerged. Spoon some sauce over any exposed parts. Cover the pot and cook for 8-10 minutes, or until the fish is opaque and flakes easily. Avoid stirring to prevent the fish from breaking apart.
- 7
Finish and Serve: Turn off the heat
- a.Carefully remove and discard the bay leaf. Gently stir in the fresh lemon juice, chopped parsley, and sliced green onions. Let it rest for 5 minutes. Serve hot over a bed of fluffy white rice.
What to keep in mind.
6 tips from the recipe — small details that make a real difference to the final dish.
- 1Mise en place is key. Have all your ingredients chopped and measured before you start the roux, as it requires your full attention.
- 2Use a heavy-bottomed pot like a Dutch oven for the roux. It distributes heat evenly and prevents hot spots that can burn the flour.
- 3If your roux gets too dark or smells burnt (acrid), discard it and start over. A burnt roux will ruin the entire dish.
- 4Using warm stock helps it incorporate into the hot roux smoothly, preventing lumps and a sudden drop in temperature.
- 5Be very gentle after adding the fish. If you need to move things around, gently tilt and swirl the pot instead of stirring.
- 6This dish is even more flavorful the next day. Reheat gently on the stovetop, adding a splash of stock or water if needed.
Adapt it for your goals.
Protein Swap
Use other firm white fish like redfish, snapper, or grouper. You can also add shrimp during the last 3-4 minutes of cooking.
Spicier VersionSpicier Version
Add a chopped jalapeño or serrano pepper along with the holy trinity, and increase the amount of cayenne pepper to your liking.
Richer FlavorRicher Flavor
For a deeper flavor, substitute half of the vegetable oil with bacon fat to make the roux.
Creole StyleCreole Style
For a slightly different flavor profile, add a splash of Worcestershire sauce and a few dashes of hot sauce (like Tabasco or Crystal) along with the other seasonings.
Why this is on our healthy list.
Excellent Source of Lean Protein
The fish in this dish provides high-quality lean protein, which is essential for building and repairing tissues, muscle maintenance, and overall body function.
Rich in Omega-3 Fatty Acids
Catfish and other fatty fish are great sources of omega-3 fatty acids, which are known to support heart health by reducing inflammation and improving cholesterol levels.
Provides Essential Vitamins and Minerals
The 'holy trinity' of vegetables, along with tomatoes and garlic, supply important nutrients like Vitamin C, Vitamin A, potassium, and antioxidants that help protect the body from cellular damage.
Frequently asked questions
Firm-fleshed white fish are ideal as they hold their shape during poaching. Catfish and redfish are traditional choices, but snapper, grouper, or cod are also excellent substitutes.