McDonald’s Special Sauce 1/4 cup salad dressing (like Miracle Whip®) 1/4 cup mayonnaise 3 tbs French salad dressing 1/2 tbs sweet pickle relish 1 1/2 tbs dill pickle relish 1 tsp sugar 1 tsp dried, minced onion 1 tsp white vinegar 1 tsp ketchup 1/8 tsp salt Mix all ingredients, and stir well in a small container. Microwave on high for 25 seconds, and stir well again. Cover, and refrigerate at least 1 hour before serving.