Fried Fish Sandwich

Name: Fried Fish Sandwich
Ingredients: Grapeseed oil, for frying; 2 1/2 pounds fresh flounder fillets; 3 tablespoons seafood seasoning, plus more for sprinkling; 2 cups all-purpose flour; 2 cups panko bread crumbs; 3 eggs beaten; Remoulade sauce, recipe follows; 1 large French baguette, cut into 4 servings; 12 tomato slices; 8 romaine leaves, chiffonade; 1 small red onion, sliced thin; 1 teaspoon hot relish (recommended: Amish or Indian); 2 tablespoons capers; 2 tablespoons Dijon mustard; 2 teaspoons chopped fresh tarragon leaves; 1/2 teaspoon chopped anchovies; Freshly ground black pepper; 2 teaspoons Worcestershire sauce; 1/2 lemon, juiced; 1 teaspoon hot sauce; 1 1/2 cups mayonnaise