Bowl of pink, creamy sauce
Why Fast Food Special Sauce Is Always The Same Thing

NEWS

By HILARY WHEELAN REMLEY
Burger with special sauce
Many burger joints and fast
food places, like Shake Shack, McDonald's, and In-N-Out Burger, offer a special sauce that is almost always a variation on the Thousand Island dressing.
Thousand Island dressing in a bowl
That’s because Thousand Island dressing consists of ingredients most restaurants have handy (mayonnaise, mustard, vinegar, ketchup, and relish), and it allows for infinite tweaks.
Big Mac sauce cups next to fries and nuggets
For example, McDonald's special sauce, or Big Mac sauce, doesn't include tomato but uses mustard, whereas In-N-Out's sauce doesn't use mustard but adds ketchup, vinegar, and sugar.
Thousand Island dressing on salad
Regardless, each version provides a tangy, creamy kick. Be it burgers, sandwiches, fries, onion rings, or seafood salads, the versatile sauce can enhance anything you pair it with.