Crunchy Catfish Sandwich

Ingredients

• 1 cup mayonnaise
• 1 lemon, juiced
• 3 teaspoons prepared horseradish
• 2 teaspoons hot sauce
• 2 tablespoons dill relish
• Pinch kosher salt
• Pinch freshly ground black pepper
• Oil, for frying
• 2 eggs
• 2 to 3 dashes hot sauce
• 2 teaspoons seafood seasoning (recommended: Old Bay)
• Kosher salt
• 1 cup cornmeal (medium ground for more texture)
• 1/2 cup all-purpose flour
• 1/2 cup cornstarch
• Freshly ground black pepper
• 4 catfish fillets, cut in 1/2, about 2 pounds
• 4 sourdough sandwich rolls
• 4 tablespoons butter, softened
• 4 romaine or red lettuce leaves