01 - In a medium bowl, whisk together the mayonnaise, Creole mustard, ketchup, horseradish, lemon juice, vinegar, hot sauce, smoked paprika, cayenne, garlic powder, onion powder, salt, and black pepper until smooth and well blended.
02 - Stir in the celery, scallion, parsley, and dill pickle until evenly combined throughout the sauce.
03 - Gently fold in the crab meat, taking care not to break up the lumps too much to maintain texture.
04 - Cover and refrigerate for at least 30 minutes to allow flavors to meld. This step is optional but highly recommended for best flavor development.
05 - Serve chilled as a dip with crackers or crudités, or use as a topping for fried fish, crab cakes, or po' boy sandwiches.