Cajun Catfish Remoulade

Whisk together the horseradish, Dijon, vinegar, paprika, 1/2 tsp. salt and cayenne in a medium bowl. Gradually whisk in 1/3 cup oil in a thin steady stream. Whisk until emulsified. Stir in the green onions and celery. Cover and refrigerate the remoulade. Preheat the oven to 400 degrees. Stir together the flour, remaining 1/4 tsp. salt, pepper and Cajun seasoning in a pie plate. Whisk together the eggs and milk in a medium bowl. Place the cornmeal in a separate bowl. Heat 1/2 inch vegetable oil in a large skillet over medium high heat. Dredge the catfish fillets in thr flour. Dip in the egg mixture to coat then coat with the cornmeal, pressing lightly to adhere. Add the catfish to the hot oil and fry about 3 to 4 minutes per side until crisp and golden brown. Drain the fillets on paper towels then transfer to a sheet pan. Bake the catfish about 6 to 8 minutes until cooked through. Serve the catfish immediately with the remoulade sauce.