Copycat In-N-Out Special Sauce Recipe
Ingredients
- 2/3 cup mayonnaise
- 3 tablespoons ketchup
- 2 tablespoons sweet pickle relish
- 1 teaspoons vinegar
- 1/2 teaspoon white sugar
- 1/4 teaspoon salt
- 1/4 teaspoon ground black pepper (optional)
Directions
Step 1: In a small bowl, combine mayonnaise, ketchup, sweet pickle relish, vinegar, white sugar, salt, and black pepper (if desired).
Step 2: Stir everything together thoroughly until the mixture is smooth and evenly combined.
Step 3: Once combined, you can serve the sauce immediately, or refrigerate it for up to 2 weeks in a sealed .
Nutrition Facts (per serving)
| Calories | 69 |
|---|---|
| Total Fat | 7g |
| Saturated Fat | 1g |
| Cholesterol | 4mg |
| Sodium | 134mg |
| Total Carbohydrate | 2g |
| Dietary Fiber | 0g |
| Total Sugars | 1g |
| Protein | 0g |
| Vitamin C | 0mg |
| Calcium | 1mg |
| Iron | 0mg |
| Potassium | 11mg |
Note: Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
Disclaimer: If you're following a medically restricted diet, its always best to consult a doctor or a registered dietitian before preparing this recipe.

Origin Story
The In-N-Out Special Sauce has become an iconic element of the In-N-Out Burger experience, a beloved fast-food chain in California. Founded in 1948 by Harry and Esther Snyder, In-N-Out quickly gained fame for its commitment to quality ingredients and simple, fresh menus. The Special Sauce, often compared to Thousand Island dressing, has been a secret staple of their burgers and fries for decades. While the exact recipe remains a closely guarded secret, numerous copycat versions, including this one, have sprung up as fans attempt to recreate the perfect blend of tangy, creamy goodness that accompanies In-N-Out's famous burgers.
Regional Variations
In-N-Out Burger is a West Coast phenomenon, primarily found in California and a few neighboring states. The Special Sauce itself, although a signature part of In-N-Outs menu, is not limited to just this chain. Similar sauces can be found in regional fast food establishments across the U.S., but what sets In-N-Out apart is the freshness of their ingredients and the simplicity of their offerings. Whether served on a Double-Double or the Flying Dutchman, the sauce brings a tangy sweetness that complements the grilled meat perfectly.
What Sets It Apart?
While there are numerous fast-food chains offering burgers with special sauces, what makes the In-N-Out Special Sauce stand out is its uniquely balanced flavor profile. Unlike the typical ketchup-based sauces, In-N-Out's version incorporates sweet pickle relish, giving it a distinctive sweetness and subtle tanginess. This is a major difference from sauces like Big Mac's or those used by other fast-food competitors, which are often more heavily focused on mayonnaise or ketchup. The simplicity and freshness of the In-N-Out Special Sauce make it a fan favorite.
Where Is It Typically Served?
In-N-Out's Special Sauce is most famously served with their burgers, fries, and secret-menu items. The sauce is a standard topping on every burger, but it can also be ordered separately as a dipping sauce for fries or even as a side with a protein-style burger (wrapped in lettuce instead of a bun). This sauce is a true Californian delight, found exclusively at In-N-Out locations in the U.S., and it has developed a loyal following of enthusiasts who often try to recreate it at home.
Fun Facts About In-N-Out Special Sauce
- The In-N-Out Burger chain was one of the first fast-food chains to use a two-way speaker system for ordering, an innovation that helped streamline service.
- Despite its massive popularity, In-N-Out remains privately owned and has maintained its focus on high-quality, fresh ingredients, including hand-cut fries and freshly made patties.
- In-N-Outs secret menu is a treasure trove of unique creations, and the Special Sauce plays a starring role in many of these items.
- Some fans claim that the Special Sauce recipe is a closely guarded secret, though the ingredients are widely known and readily recreated in kitchens across the country.
Conclusion
The Copycat In-N-Out Special Sauce recipe allows fans of the iconic fast-food chain to recreate a taste of California at home. Whether you're making a burger or just enjoying some fries, this sauce adds the perfect tangy kick. Its balanced flavor, simplicity, and versatility are what have made it a true staple in the fast-food world, and its regional appeal continues to grow. So, next time you're craving that familiar flavor, why not try whipping up a batch of this easy-to-make sauce?
Recipe
- 2/3 cup mayonnaise
- 3 tablespoons ketchup
- 2 tablespoons sweet pickle relish
- 1 1/2 teaspoons vinegar
- 1/2 teaspoon sugar
- 1/4 teaspoon salt
- 1/4 teaspoon pepper (optional)
Mix all ingredients in a small bowl and stir until well combined. Serve immediately or refrigerate for up to 2 weeks.
Recipe Author: Nicole McLaughlin