BK Royal Sauce is a signature condiment created by Burger King in 2017 as a replacement for Kings Sauce. The exact recipe of the sauce is unknown, but it is believed to include mayonnaise, ketchup, mustard, and various spices, with a backdrop of tangy onion and garlic. The sauce has a creamy texture and is slightly tangy, with hints of tomato, onion, and vinegar. It also has a subtle sweetness and a hint of savory flavor. Some tasters think it has a hint of parmesan. The sauce is thicker than other sauces and has a mild spice from the mustard. It is served on all the chicken sandwiches and wraps in the Royal line and can also be found in other Crispy Royal items. The sauce complements the textures of burgers or chicken sandwiches and adds an Italian hint to the sandwich with some basil undertones. The sauce is a unique blend of flavors and textures that creates a harmonious and indulgent dining experience.