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In-N-Out Sauce (Copycat Recipe) Recipe

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4.1 from 50 reviews

A simple and delicious copycat recipe for In-N-Out Sauce, perfect for adding a tangy, creamy flavor to burgers, fries, wraps, or as a versatile dipping sauce. This quick homemade version combines mayonnaise, ketchup, sweet pickle relish, and white vinegar, creating the iconic taste loved by many.

Ingredients

In-N-Out Sauce Ingredients

  • ½ cup mayonnaise
  • 3 tablespoons ketchup
  • 2 tablespoons sweet pickle relish (chopped extra fine)
  • 1 tablespoon white vinegar
  • Pinch kosher salt

Instructions

  1. Prepare the sauce: In a small mixing bowl, combine ½ cup of mayonnaise, 3 tablespoons of ketchup, 2 tablespoons of finely chopped sweet pickle relish, 1 tablespoon of white vinegar, and a pinch of kosher salt. Stir thoroughly until all ingredients are evenly blended to create a smooth, creamy sauce.
  2. Use or store: Use the sauce immediately as a topping for burgers, fries, wraps, or your favorite dishes. If not using right away, transfer the sauce to an airtight container and refrigerate to let the flavors meld together for enhanced taste. It keeps well for several days, making it convenient for make-ahead meals.

Notes

  • For best flavor, allow the sauce to chill for at least 30 minutes before serving.
  • Adjust the sweetness or tanginess by varying the amount of ketchup or vinegar according to your taste.
  • Store the sauce in an airtight container in the refrigerator for up to 1 week.
  • This sauce pairs well with all kinds of sandwiches and as a dipping sauce for fries or vegetables.