In a medium bowl, whisk together mayonnaise, white vinegar, ketchup, brown sugar, yellow mustard, hot sauce, garlic powder, and black pepper until well combined.
Taste and adjust seasonings as needed. Add more hot sauce for extra spice or more brown sugar for sweetness.
Serve immediately or refrigerate for later use. The flavors will meld beautifully overnight.
Notes
This comeback sauce is incredibly versatile! Use it as a dip, marinade, or even a burger topping.