In-N-Out Sauce Recipe is a creamy, flavor-packed sauce that’s just like the original and perfect for burgers, fries, and more!
Author’s Notes
My Very First In-N-Out Run
When I started college, I met tons of people from California, and they all said the same thing: Utah had no good fast-food burgers because nothing compares to In-N-Out. And at the time, we didn’t even have one.
Then at the end of my freshman year, they announced one in St. George, Utah, about a 3½-hour drive away. My friends were so excited that we made a whole day of it and drove down so they could show me “the best burger ever” haha.
It was such a fun trip. I liked the burgers, didn’t love the fries, but I could not get enough of the sauce. That was easily my favorite part.
Now I’ve got one 10 minutes from my house, but I usually just make my own In-N-Out Sauce Recipe at home. This copycat is spot on and makes any burger or fry taste so much better!
In-N-Out Sauce Recipe Ingredients
| Ingredient | Let’s Chat About It |
|---|---|
| Mayo | Use a good-quality mayo for the best flavor and smooth texture. I love Best Foods. |
| Ketchup & sugar | These add a little sweetness and that classic color. I like to use Heinz here, it just has the best flavor. |
| Sweet pickle relish | Chop if needed so this In-N-Out Sauce Recipe stays smooth, not chunky. |
| White vinegar | Adds a little brightness and tang to balance everything nicely. |
| Salt | Start small and adjust to taste at the end. |
Quick Tip
Use good-quality ingredients for the best flavor. Since this sauce is so simple, every ingredient really stands out, and using lower-quality options can make it taste off.
Chelsea’s Top Tip
Let It Sit Overnight!
The flavor gets noticeably better after a longer chill, so if you can, make it the day before and give it a quick stir before serving.
How To Use My In-N-Out Sauce Recipe
- Burgers: Spread on buns for the best burger sauce!
- Fries: Dip or drizzle over hot fries.
- Chicken: Use as a dip for tenders, nuggets, or grilled chicken
- Sandwiches: Add to wraps, deli sandwiches, or sliders
- Bowls: Add to rice or burger bowls for extra flavor
More Restaurant Copycat Recipes
Salads With Meat
Applebee’s Chicken Salad
Dressings
Chick-Fil-A Sauce Recipe
Appetizers
Corn Salsa Recipe (Chipotle Copycat!)
In-N-Out Sauce Recipe
Equipment
Ingredients
- 1/2 cup mayo I like Best Foods
- 3 tablespoons ketchup I like Heinz best
- 2 tablespoons sweet pickle relish I like Heinz best
- 1-1/2 teaspoons white vinegar
- 1/2 teaspoon granulated sugar
- 1/4 teaspoon salt
Instructions
- Add everything to a medium bowl; whisk until smooth and fully combined. Taste and adjust flavors to preference if needed.
- Cover and refrigerate at least 1 hour, longer for better flavor. (I usually make it a day before!)
- Stir well before using. Enjoy!
Recipe Notes
Nutrition
Nutrition information is automatically calculated, so should only be used as an approximation.
