In and Out Sauce Recipe

Copycat In-N-Out Burger Spread is a simple sauce that can be used to top your burgers, for dipping your french fries or as a sandwich spread. You only need 4 ingredients and you probably already have them.

We love making copycat recipes and my family loves when I figure out the secret ingredients. I am sure that this is less ingredients then what the In-N-Out Restaurants make. But we think it taste amazingly close and we keep it stocked in our fridge. You may even like this Copycat In-N-Out Burger Animal Style.

What is In-N-Out Sauce?

The ingredients for Copycat In-N-Out sauce recipe is very simple. There is no need for ingredients that you can’t pronounce. The ingredients we use you probably already have and combining these ingredients you will want to spread it on everything.

• Mayonnaise
• Ketchup
• Relish
• White Vinegar

In and Out Sauce Ingredients

• Mayonnaise – Base of this sauce and I like using full fat mayo
• Ketchup – Use store bought or make Easy Homemade Ketchup Recipe
• Sweet Pickle Relish – Love the hint of sweetness it gives the sauce
• White Vinegar – Gives the sauce a tangy flavor. Substitute with apple cider vinegar

Scroll to the bottom for the full recipe in the recipe card.

How to Make In and Out Sauce

• Step 1 – Stir the mayonnaise, ketchup, Relish, and Vinegar together in a medium bowl. 

• Step 2 – Chill for 1 hour and then the sauce is ready to serve and enjoy!  

Tips for In and Out Burger Sauce Recipe

• Make Ahead – We think the sauce taste best when it has set in the refrigerator for a few hours and even overnight. It gives time for all the ingredients to really marinate together.
• Use it as a Marinate – This sauce would be great to marinate your chicken breast or chicken thighs in. Just place chicken in a zip lock bag and spoon in some sauce. Let it marinate overnight and then grill or bake your chicken.
• Burger Bowl – I like to eat burger patties with no bun and make a burger bowl. I line a bowl with lettuce, dice up the beef patty and drizzle this sauce over the top. It gives it amazing flavor and I know exactly what is in the sauce.

Variations and Additions

Feel free to add in spices in a small amount to taste for a delicious variation. These are some of our favorite recommendations.

• Garlic Powder
• Hot Sauce – Slight kick of flavor
• Teaspoon Paprika
• Salt and Pepper
• Yellow Mustard

How to Use In-N-Out Sauce

We love serving this sauce on Copycat In-N-Out Burger Recipe or In-N-Out Animal Style Fries Recipe. But it can be used in many different ways.

• Dipping Chicken Nuggets, Grilled Chicken Tenders and Air Fryer Onion Rings
• Use it has a sandwich spread on a Turkey Melt Sandwich
• Mix in with your pasta salad
• Top your lettuce Wraps
• Use as a dipping sauce with chopped veggies on a Veggie Tray Recipe
• Dip your Grilled Cheese in it