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1. In a bowl, mix together mayonnaise, ketchup, and mustard until smooth.
2. Add white vinegar, paprika, onion powder, garlic powder, sugar, salt, and pepper. Mix well to incorporate all ingredients.
3. Taste the sauce and adjust the seasoning to your preference. If you prefer a sweeter sauce, add a little more sugar. If you like a hotter sauce, add a little more mustard or paprika.
4. Once the sauce is well mixed and seasoned to your taste, cover the bowl with plastic wrap and let sit in the refrigerator for at least 30 minutes to allow the flavors to develop.
5. After resting, your McDonalds Big Mac sauce is ready to use! Use it to top your homemade burgers or to accompany your fries.
6. Enjoy your meal