For the first time ever, McDonald's is selling Big Mac Sauce separately via the app and I immediately ordered a cup! The iconic sauce — Thousand Island-style with pickles and onions — is now available to dip your fries, nuggets, or anything else. It's literally the same sauce from the Big Mac in a convenient dip cup. Game changer for sauce lovers.
In a medium bowl, combine 1 cup mayonnaise, 3 tbsp sweet pickle relish, 2 tsp yellow mustard, and 2 tbsp finely minced white onion. Blend well until the mixture is creamy and smooth—this creates the tangy, creamy foundation just like McDonald's signature Big Mac Sauce.
Add 1 tsp white vinegar, 1 tsp paprika, 1 tsp garlic powder, 1 tsp onion powder, 1 tsp sugar, and 0.5 tsp salt to the bowl. Stir thoroughly to fully incorporate all seasonings. The paprika gives the classic faint orange tint and subtle warmth found in McDonald's original sauce.
Mix the sauce vigorously for at least 60 seconds to emulsify the ingredients—this step builds that thick, almost spoonable consistency unique to McDonald's dip cups.
Cover the bowl and refrigerate the sauce for at least 2 hours. This chilling phase lets the flavors marry and mellows the raw onion, ensuring the Big Mac Sauce’s signature tang and extra-creamy texture.
After chilling, stir the sauce again and portion about 2 tbsp (28g) into individual small sauce cups—just like the official McDonald's Big Mac Sauce Dip Cups. Serve cold as a dip for fries, nuggets, or use on burgers. Copycat tip: For extra authenticity, use sweet pickle relish with lots of visible pieces, as McDonald's uses diced pickles in their sauce.