What menu item is known for featuring McDonald's signature sauce?

The Big Mac is renowned for featuring McDonald's signature sauce, which is often referred to as "special sauce." This sauce is a key component that contributes to the unique flavor profile of the Big Mac, setting it apart from other menu items. The sauce is a creamy dressing with a tangy taste, which includes ingredients such as mayonnaise, relish, and a blend of spices, creating a distinct combination that fans of the Big Mac have come to love.

While other menu items like the Quarter Pounder, Filet-O-Fish, and McChicken have their own unique flavors and sauces, they do not incorporate the same signature sauce that gives the Big Mac its iconic status. For example, the Quarter Pounder is known for its beef patty and the toppings of ketchup and mustard, while the Filet-O-Fish features a tartar sauce, and the McChicken is served with mayonnaise. Each of these items has its distinguishing features, but it is the Big Mac's special sauce that truly defines its character on the McDonald's menu.