Use equal parts mayonnaise and ketchup as your base, then adjust apple cider vinegar in small increments (start with 1/2 teaspoon) to avoid overpowering the sauce with acidity.

Lightly warm the pickle relish in a small pan for 30 seconds before mixing to intensify its tangy flavor and prevent excess liquid from making your sauce watery.

Whisk the mayonnaise and mustard together first before adding other ingredients—this creates a stable emulsion that keeps your sauce creamy and prevents separation.

Add salt and pepper in small pinches throughout mixing rather than all upfront, tasting after each addition to achieve perfectly balanced seasoning without overdoing it.

Refrigerate your finished sauce for at least 30 minutes before serving—the cold allows flavors to meld and intensify, delivering a more complex, restaurant-quality taste.