Copycat In-n-Out Sauce (Easy Recipe) (2024)

Published by Allyson
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In-n-Out Sauce is famous on their burgers and to dip fries into! Now you can make it at home with this perfect copycat in-n-out sauce recipe!

Copycat In-n-Out Sauce (Easy Recipe) (1)

Making your favorite restaurant sauces at home is so easy, and often times overlooked! I have already shared with you how to make Big Mac Sauce, Zaxby's Sauce, Outback Bloom Sauce and many more! This Copycat In-N-Out Sauce will be a staple topping or dip for Air Fryer Hamburgers, Air Fryer French Fries, or even Air Fryer Asparagus fries! It's delicious and easy, and most of the ingredients you likely have at home!

Copycat In-n-Out Sauce (Easy Recipe) (2)

As I mentioned, making Copycat In-N-Out Sauce couldn't be easier, and you likely already have all the ingredients at home. Here's how to make it:

How to make Copycat In-N-Out Sauce:

**scroll down for full ingredients list and printable directions**

  • Get all the ingredients together for in-n-out sauce: Mayonnaise (I like reduced fat), ketchup, yellow mustard, white vinegar, sweet pickle relish, salt, and pepper.
  • Add all the ingredients to a medium bowl and then whisk to combine.
Copycat In-n-Out Sauce (Easy Recipe) (3)
  • Refrigerate for at least 30 minutes to let all the flavors meld together.
  • Serve on your favorite hamburger or dip your fries into this delicious in-n-out sauce!
  • Store sauce up to TWO WEEKS in the fridge in a sealed container.
Copycat In-n-Out Sauce (Easy Recipe) (4)

Need ideas on how to use this delicious sauce? Here are some great recipes to add or use In-N-Out Sauce:

  • Air Fryer Frozen French Fries
  • Air Fryer Tater Tots (cook from frozen)
  • Air Fryer Hamburgers
  • Air Fryer Frozen Chicken Tenders
  • Air Fryer Hot Dogs
  • Hot Dog Chili Bake
  • Air Fryer Zucchini Fries (no oil)
  • Air Fryer Cheese Fries (2 ingredients)
  • Air Fryer Green Bean Fries (no oil recipe)
Copycat In-n-Out Sauce (Easy Recipe) (5)

Have you tried the famous In-N-Out Sauce? Even if you have never tried it, now you can make the perfect replica at home to use all the time! It is so delicious and easy!

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5 from 11 votes

Copycat In-n-Out Sauce (Easy Recipe) (6)


Copycat In-N-Out Sauce

In-n-Out Sauce is famous on their burgers and to dip fries into! Now you can make it at home with this perfect copycat in-n-out sauce recipe!

Course:Side Dish


Keyword:copycat in-n-out sauce

Servings: 12 Tablespoons (about)

Calories: 32 kcal


  • ½cupmayonnaise(reduced fat or regular)
  • 3TBSketchup
  • 1teaspoonyellow mustard
  • 1teaspoonwhite vinegar
  • 2 ½TBSsweet pickle relish
  • dash of salt
  • dash of black pepper


  1. Using a medium bowl, add all the ingredients. Whisk well to combine.

  2. Cover and refrigerate for 30 minutes.

  3. Serve and enjoy!

Recipe Video

Recipe Notes

Will keep for 2 weeks in a sealed container in the fridge.

Makes about ¾ cups of sauce. Each serving is 1 TBS.

Nutritional information per serving: 32 calories, 2g fat, 4g carbohydrates, 2g sugar (used reduced fat mayo to calculate).


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Reader Interactions


  1. Jen

    Copycat In-n-Out Sauce (Easy Recipe) (7)
    This is the only sauce my kids use for their fries! So quick and easy to make plus no reason to go out for it anymore. Love it!


  2. Jessica Burgess

    Copycat In-n-Out Sauce (Easy Recipe) (8)
    YESSSS! I have been craving this since we moved and no longer have an In-N-Out, and this totally worked and conquered my craving!! Thank you!


  3. Erin

    Copycat In-n-Out Sauce (Easy Recipe) (9)
    This is such an amazing flavor combo!!


  4. katerina @

    Copycat In-n-Out Sauce (Easy Recipe) (10)
    I love this flavor combo! Its incredibly delicious!


  5. Beti | easyweeknightrecipes

    Copycat In-n-Out Sauce (Easy Recipe) (11)
    Yes, please! This looks incredibly delicious! I can't wait to try it!


  6. Catalina

    Copycat In-n-Out Sauce (Easy Recipe) (12)
    It's a sauce that I must make at home. It sounds so delicious.


  7. Toni

    Copycat In-n-Out Sauce (Easy Recipe) (13)
    This is really perfect!! It is so easy to make, too!


    • Savannah Sbaiti

      Copycat In-n-Out Sauce (Easy Recipe) (14)
      Perfect. My family devoured this sauce over cheesy tater tots!!!


  8. Minda

    Copycat In-n-Out Sauce (Easy Recipe) (15)
    This is the right recipe the others are missing the mustard. Appreciate the recipe.


    • Allyson

      It is SO good!


  9. Rocio

    Copycat In-n-Out Sauce (Easy Recipe) (16)
    This is the best one I’ve tried. Thank you! I used to try a recipe with sugar and it ruins it.


    • Allyson

      I am so happy you like it!


  10. Sherri

    Copycat In-n-Out Sauce (Easy Recipe) (17)
    It was slightly off. Felt like something was missing. Added a dash of Worcestershire and it’s just like the real stuff!!


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Copycat In-n-Out Sauce (Easy Recipe) (2024)


What is the In-N-Out sauce made of? ›

Spread 'em: Mastering the Special Sauce

I never understood why In-N-Out refers to their sauce as "Spread." Maybe they're just a little too cool for school. In any case, all it is is a basic Thousand Island-style dressing: a mixture of ketchup, mayonnaise, and sweet pickle relish.

Is In-N-Out sauce the same as Thousand Island dressing? ›

Because of similarities in color and taste, many people assume that In-N-Out's burger sauce is simply Thousand Island dressing, i.e. a blend of mayonnaise and ketchup. However, Thousand Island has a thicker consistency and is slightly spicier than In-N-Out sauce.

What's the difference between Big Mac sauce and In-N-Out sauce? ›

A closer look at the ingredient list shows one significant difference between the two: while McDonald's, like In-N-Out, includes sweet pickle relish and mayonnaise in their secret sauce, McDonald's doesn't include ketchup or any tomato products at all.

What makes In-N-Out burger so special? ›

Our commitment to quality starts with our hamburgers. And our burgers begin with our patties. Each patty is made using only fresh, individually inspected, whole chucks from premium cattle selected especially for In-N-Out Burger. Our team of Associates removes the bones, grinds the meat and then makes each patty.

What are the ingredients in the In-N-Out burger? ›

Cheeseburger 100% beef patty, lettuce, tomato, spread, 1 slice of American cheese, with or without onions, bun. 2 100% beef patties, lettuce, tomato, spread, 2 slices of American cheese, with or without onions, bun. French Fries Prepared fresh in 100% sunflower oil using only fresh potatoes.

What is Thousand Island sauce made of? ›

Thousand Island Ingredients: It's mixture of mayonnaise, sour cream, ketchup, sweet pickle relish, red onion vinegar, sugar, garlic, and salt and pepper. All ingredients are combined by hand to make a perfect, thick, and creamy dressing, dip, or sauce.

Is Secret Sauce just Thousand Island? ›

McDonald's initially kept the ingredients of the Big Mac's secret sauce vague, but they've since revealed the contents to be mayonnaise, relish, vinegar, spices, and sweeteners—which is basically a riff on Thousand Island without the tomato.

Is Thousand Island just fry sauce? ›

How have we never heard about this stuff?! Fry sauce fans will be quick to tell you that while it may look similar, fry sauce is NOT the same as Thousand Island dressing. Fry sauce is “slightly sweet, totally creamy, with just a hint of tang from the vinegar,” according to food blog Buns in My Oven.

What is in and out roadkill fries? ›

Roadkill Fries

Roadkill Fries are perfect for anyone who wants both a burger and fries but knows they don't have quite enough room for both. When you order roadkill fries from the secret menu for In-N-Out, you're ordering a Flying Dutchman on top of Animal-Style fries.

What is the In-N-Out sauce called? ›

The In-N-Out spread contains 11 grams of carbohydrates per serving. This spread is a delicious blend of mayonnaise, ketchup, and relish, giving it a tangy and slightly sweet flavor that pairs perfectly with their famous burgers and fries.

What is the healthiest item on the In-N-Out menu? ›

Best: Protein Style Cheeseburger

This core menu item is the regular cheeseburger (1 all-beef patty and 1 slice American Cheese) wrapped in lettuce rather than on a bun. This option makes our best bet due to its modest calories, and better saturated fat and sodium counts compared to other burger choices on the menu.

What is the closest sauce to Big Mac sauce? ›

According to a video posted by TikTok influencer Mike Haracz, a former McDonald's corporate chef, Great Value brand Secret Sauce is the closest thing you'll get to the fast food chain's Big Mac sauce.

Which burger sauce is closest to the Big Mac? ›

"The [sauce] that best replicated Big Mac sauce from McDonald's that you should go buy if you want it is Great Value's 'Secret Sauce,'" he told his burger followers. "Look at the ingredients statement, it's almost identical."

Will McDonald's sell you Big Mac sauce? ›

Available in restaurant, in Drive-Thru, via the My McDonald's App, and also via McDelivery, now is the time to try Big Mac® Special Sauce with any McDonald's menu items whether that's Chicken McNuggets, Veggie Dippers... or perhaps a Big MacFlurry…?

What does the In-N-Out spread taste like? ›

The sauce is creamy, tangy, salty, and slightly sweet, bringing to mind Thousand Island dressing. But it's not quite that simple. We wanted to find out what's really in the spread, and how you can make it at home.

What are the little peppers from in and out? ›

The yellow chile peppers carried by IN-IN-OUT burger are in fact cascabella peppers. Cascabella peppers are cone shaped and produce a chile pepper that is approximately 1 ¾” long by ¾” wide. Cascabellas turn from yellow, to orange, to red when mature. The plant has green stems, green leaves and white flowers.

Does In N Out Burger use real meat? ›

As with all locations, fresh ingredients will be supplied to the store from In-N-Out. Hamburger patties are made from 100% American beef and whole chucks are boned and ground by In-N-Out's own butchers.

What is sauce made from meat juices? ›

Pan sauce is a thin sauce that's made from the drippings your meat cooked in, also known as fond.


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