Begin by gathering all your ingredients.

It helps to have everything ready, so you can mix it together quickly.

In a medium bowl, add the mayonnaise.

Make sure you use a good-quality one for the best flavor.

Stir in the sweet pickle relish.

This is what gives the sauce that delightful tangy-sweet flavor.

Add the minced onion and lemon juice.

These add freshness and zest, enhancing the sauce’s complexity.

Mix in the Dijon mustard.

It adds a subtle spicy kick that’s just right.

Combine all the ingredients thoroughly until the sauce is smooth and creamy.

Cover the bowl and refrigerate the sauce.

Chill for at least two hours to let the flavors meld.