1/4 cup fresh lemon juice
3/4 cup vegetable oil
1/2 cup chopped onion
1/2 cup chopped green onions
1/4 cup chopped celery
2 tablespoons chopped garlic
2 tablespoons prepared horseradish
3 tablespoons Creole whole-grain mustard
3 tablespoons prepared yellow mustard
3 tablespoons ketchup
3 tablespoons chopped parsley leves
1 teaspoon salt
1/4 teaspoon cayenne pepper
1/8 teaspoon freshly ground black pepperCombine all ingredients in the bowl of a food processor and process for 30 seconds. Use immediately or store. Will keep for several days in an airtight container in the refrigerator.