Now that you have all your ingredients ready, let’s dive into the step-by-step process of creating this mouthwatering Southern Fried Catfish Dinner. Follow these instructions carefully for perfectly cooked, crispy catfish every time:

Step 1: Prepare the Catfish Marinade

1. In a large bowl, combine the buttermilk, hot sauce, and yellow mustard. Whisk these wet ingredients together until they are well combined and slightly frothy.
2. Pat the catfish fillets dry with paper towels. This step is crucial for the marinade to adhere properly and for the breading to stick later on.
3. Place the dried catfish fillets into the buttermilk mixture. Ensure that each fillet is fully submerged in the marinade.
4. Cover the bowl with plastic wrap or a lid. Refrigerate the catfish and let it marinate for at least 30 minutes, or ideally for 1 to 2 hours. Marinating longer will result in more tender and flavorful catfish.

Step 2: Prepare the Breading Mixture

1. In a separate large, shallow dish or baking pan, whisk together the all-purpose flour, yellow cornmeal, cornstarch, salt, black pepper, garlic powder, onion powder, paprika, and cayenne pepper (if using). Mix all the dry ingredients thoroughly to ensure they are evenly distributed. This creates a flavorful and well-seasoned breading.

Step 3: Bread the Catfish Fillets

1. Remove the catfish fillets from the buttermilk marinade, letting any excess marinade drip back into the bowl. You don’t want the fillets to be dripping wet, but a little moisture is good for breading adhesion.
2. Dredge each catfish fillet in the breading mixture, ensuring it is completely coated on all sides. Press the breading gently into the fish to help it adhere firmly.
3. Shake off any excess breading. This prevents the breading from becoming too thick and ensures a crispy, not soggy, result.
4. Place the breaded catfish fillets on a wire rack or a clean plate. If you have time, let the breaded catfish rest for about 10-15 minutes before frying. This allows the breading to set and adhere even better, resulting in a crispier crust.

Step 4: Fry the Catfish to Golden Perfection

1. Pour vegetable oil or peanut oil into a large, heavy-bottomed skillet or Dutch oven to a depth of about 2-3 inches. Ensure you have enough oil to fully submerge the catfish in shallow frying or reach halfway up the sides for pan frying.
2. Heat the oil over medium-high heat until it reaches a temperature of 350-375°F (175-190°C). Use a deep-fry thermometer to monitor the oil temperature accurately. Maintaining the correct oil temperature is crucial for crispy, evenly cooked catfish. If you don’t have a thermometer, you can test the oil by dropping a small pinch of breading into it; it should sizzle and turn golden brown in about 15-20 seconds.
3. Carefully place the breaded catfish fillets into the hot oil, being careful not to overcrowd the pan. Fry in batches to maintain the oil temperature and prevent the fish from steaming instead of frying. Overcrowding will lower the oil temperature and result in soggy catfish. Fry 2-3 fillets at a time, depending on the size of your pan.
4. Fry the catfish for about 3-5 minutes per side, or until golden brown and cooked through. The exact cooking time will depend on the thickness of your fillets and the oil temperature. The catfish is done when it is golden brown and flakes easily with a fork.
5. Remove the fried catfish fillets from the oil using a slotted spoon or tongs. Place them on a wire rack lined with paper towels to drain excess oil and maintain crispiness. Avoid placing them directly on paper towels, as this can make the bottom of the catfish soggy.

Step 5: Serve and Enjoy!

1. Serve the Southern Fried Catfish immediately while it’s hot and crispy. The best way to enjoy fried catfish is fresh out of the fryer when the crust is at its peak crispiness.
2. Garnish with lemon wedges and serve with your favorite Southern sides. Lemon wedges add a bright, citrusy touch that complements the richness of the fried catfish. See the “How to Serve” section below for delicious side dish suggestions.