Best Ever Burger and Fry Sauce

Burger season is here. I mean, I’m down for a burger any time of year, obviously, but summer = grilling and grilling = burgers so I’ve been grilling up a lot of burgers lately!

I think burgers might actually be the way to my husband’s heart. I’ve never seen a man’s face light up so much as I do when I tell him we’re having burgers. Another thing that makes him happy? In-N-Out. Who doesn’t love In-N-Out?

Being a So Cal native, I think the hardest thing for him when we were living in Florida was not having In-N-Out. He went through serious withdrawals. Now that we are back in So Cal, we can get In-N-Out whenever we want, but that adds up (and obviously is not so great for one’s health)!

Best Ever Burger and Fry Sauce

I grill lean burgers for him once a week and my most favorite chili lime chicken burgers for myself. I decided to try to replicate that famous sauce at home and was seriously pleased with the results!

This sauce/spread is perfect on any burger and of course, as a dipping sauce for French fries or roasted potatoes! The ingredients are pretty simple: Mayo, ketchup, relish, Worcestershire sauce, and a touch of sugar.

I was a little unsure of the sweet relish (and the sugar) as I’m not usually a fan of sweet relish at all on its own, but it’s obviously what they use and it works well in this sauce without being actually sweet.

I made a big batch and keep it stored in the fridge in a glass jar for us to have on hand for burger night. You can also mix up a batch to serve guests for your next summer BBQ!

Best Ever Burger and Fry Sauce

Best Ever Burger and Fry Sauce
Yield: 24 servings

Best Ever Burger and Fry Sauce

Prep Time 10 minutes
Total Time 10 minutes

This In-N-Out Copycat recipe is simple to make and perfect on burgers and sandwiches or for dipping your fries!


  • 1 cup mayonnaise
  • 1/3 cup ketchup
  • 2 tablespoons sweet relish (you can add more or less as desired)
  • 2 teaspoons Worcestershire sauce
  • 2 teaspoons white vinegar
  • 1 teaspoon sugar


  1. Add all ingredients to a mixing bowl. Stir until completely combined. Transfer the sauce into a serving bowl or container. Store leftovers in the fridge for up to three weeks.


2 WW Smartpoints

Nutrition Information:



Serving Size:

1 tablespoon

Amount Per Serving: Calories: 68Total Fat: 7gSaturated Fat: 1gTrans Fat: 0gUnsaturated Fat: 6gCholesterol: 4mgSodium: 103mgCarbohydrates: 2gFiber: 0gSugar: 1gProtein: 0g

Best Ever Burger and Fry Sauce