Imagine biting into a perfectly grilled burger, and with each mouthful, the creamy and tangy In-N-Out sauce elevates your taste experience to new heights. The rich blend of flavors dances on your palate, making every fry and sandwich feel like an indulgent treat, leaving you craving more.
As I slathered this magical sauce on my homemade burgers during a backyard barbecue, memories of road trips and late-night cravings flooded back. Nothing beats gathering with friends on a sunny afternoon, dipping fries into that zesty goodness while sharing laughs and stories—this sauce truly brings people together for unforgettable moments!
Why Is in n out sauce So Irresistibly Good?
Creamy base of mayonnaise creates a luscious texture that elevates any dish. Tangy kick from ketchup and white vinegar adds just the right amount of zest. Sweetness from pickle relish balances the flavors beautifully, while savory notes from garlic and onion powders make every bite delightful. Plus, this sauce is incredibly versatile—perfect for burgers, fries, or even as a sandwich spread! Best of all? It takes only 5 minutes to whip up, making it a crowd-pleaser that you’ll keep coming back to again and again.
in n out sauce Ingredients
- 1 cup mayonnaise – This creamy base gives the sauce its rich texture; opt for a quality brand for the best flavor.
- 2 tablespoons ketchup – Adds a hint of sweetness and tang; feel free to use organic ketchup for a fresher taste.
- 1 tablespoon sweet pickle relish – Provides that delightful crunch and sweetness, which is essential in mimicking the famous In-N-Out flavor.
- 1 teaspoon white vinegar – A splash of acidity balances the richness; you can substitute with apple cider vinegar if needed.
- 1 teaspoon garlic powder – Enhances the overall flavor profile with a warm, savory note; fresh garlic can be used but adjust accordingly.
- 1 teaspoon onion powder – Adds depth and a subtle sweetness, crafting a more complex taste experience.
- 1 teaspoon paprika – Contributes a mild smokiness and vibrant color; smoked paprika can add an extra layer of flavor if desired.
- 1 teaspoon salt – Essential for bringing all the flavors together; adjust to your taste preference as needed.
- 1 teaspoon black pepper – Adds just the right amount of heat and sharpness to balance the creamy elements of the sauce.
How to Make in n out sauce

1. Combine: In a mixing bowl, add 1 cup of mayonnaise, 2 tablespoons of ketchup, and 1 tablespoon of sweet pickle relish. This combination is the creamy base that will make your in n out sauce irresistible!
2. Whisk: Using a whisk, blend the ingredients together until smooth and well combined. Aim for a silky texture that’s free of lumps—this should only take a minute or two.
3. Taste: Take a moment to taste your creation! If desired, adjust the seasoning with a pinch more salt or pepper for that perfect balance of flavors.
4. Chill: Cover your bowl and refrigerate the sauce for at least 30 minutes before serving. This allows the flavors to meld beautifully, enhancing every bite.
Optional: Drizzle over burgers or use as a dip for fries!
Exact quantities are listed in the recipe card below.
Expert Tips
- Quality Mayonnaise: Use a high-quality mayonnaise for a creamier texture; it makes a noticeable difference in the richness of your in n out sauce.
- Balance Sweetness: Adjust the sweet pickle relish to taste; too much can overpower the tangy notes, so start with less and add more as needed.
- Fresh Ingredients: Opt for fresh garlic and onion powder instead of stale ones; this will enhance the flavor profile and prevent any off-tastes.
- Chill Time Matters: Don’t skip refrigerating the sauce for at least 30 minutes; this step allows the flavors to meld beautifully, creating that signature in n out sauce taste.
- Taste Test: Always taste your sauce before serving; adjusting salt and pepper can elevate the overall flavor, ensuring it’s just right for your burgers and fries.
How to Store and Freeze in n out sauce
- Fridge: Store your in n out sauce in an airtight container for up to 1 week. This keeps it fresh and delicious for all your favorite meals.
- Freezer: You can freeze the sauce for up to 3 months in a freezer-safe container. Just remember to leave some space for expansion as it freezes!
- Thawing: When ready to use frozen sauce, thaw it overnight in the fridge. Stir well before serving to revive its creamy texture.
- Serving: If the sauce thickens after freezing, simply whisk in a little water or additional vinegar until you reach your desired consistency.
in n out sauce Variations
Feel free to get creative with this creamy delight and tailor it to your taste buds!
- Spicy Kick: Add 1 teaspoon of sriracha or your favorite hot sauce for a zesty twist. This fiery addition brings a delightful heat that makes each bite sing.
- Herb Infusion: Mix in 1 tablespoon of fresh chopped herbs like dill or parsley for a refreshing flavor boost. The herbs add a vibrant touch that complements the creamy base beautifully.
- Smoky Flavor: Incorporate 1 teaspoon of smoked paprika instead of regular paprika. This swap brings a warm, smoky essence that elevates the sauce to new heights.
- Vegan Version: Substitute mayonnaise with 1 cup of vegan mayo for a plant-based alternative. You won’t miss the traditional mayo, as the flavors meld perfectly.
- Tangy Twist: Increase the white vinegar to 2 teaspoons for an extra tangy punch. This adjustment will brighten up the sauce, making it perfect for summer BBQs.
- Sweeten It Up: Add an extra tablespoon of sweet pickle relish for enhanced sweetness. This makes the sauce even more reminiscent of classic diner fare, perfect for slathering on burgers.
- Creamy Avocado: Blend in half an avocado for added creaminess and a subtle flavor change. The avocado provides a lovely texture while keeping it rich and smooth.
- Citrus Zest: Grate in some lemon or lime zest to brighten up your sauce with citrusy notes. This refreshing touch awakens the palate and pairs wonderfully with grilled foods.
Make Ahead Options

Preparing in n out sauce is a fantastic choice for meal prep, making your busy weeknights a breeze. You can combine the mayo, ketchup, sweet pickle relish, white vinegar, garlic powder, onion powder, paprika, salt, and black pepper all in one mixing bowl ahead of time. Simply whisk these ingredients together until smooth and well combined; this step can be done up to 24 hours in advance. To maintain the rich flavors of the sauce, refrigerate it for at least 30 minutes before serving, but you can keep it stored in the fridge for up to 3 days. When you’re ready to serve, just give it a quick stir to refresh its creamy goodness and enjoy this tangy delight with your favorite burgers or fries!
in n out sauce Recipe FAQs
What type of mayonnaise should I use for this sauce?
You can use any mayonnaise you prefer, but for the best flavor and creaminess, I recommend using a full-fat mayonnaise. If you’re looking for a lighter option, low-fat or vegan mayonnaise can also work well. Just keep in mind that the taste might vary slightly.
How long can I store the in n out sauce in the fridge?
This delicious sauce can be stored in an airtight container in the refrigerator for up to one week. Make sure to give it a good stir before serving, as some separation might occur over time.
Can I freeze the in n out sauce?
Freezing is not recommended for this sauce due to its mayonnaise base. Freezing may cause the texture to change, resulting in separation when thawed. It’s best enjoyed freshly made or within a week of preparation.
What if I don’t have sweet pickle relish?
No sweet pickle relish? No problem! You can substitute it with chopped dill pickles or even a touch of honey for sweetness. Just be mindful of balancing flavors; you might need to adjust the other seasonings slightly to suit your taste.
How many servings does this recipe yield?
This recipe yields about 4 servings, with each serving containing approximately 90 calories. It’s perfect for sharing with family and friends at barbecues or casual dinners!
Can I adjust the spice level in this sauce?
Absolutely! If you like a bit of heat, consider adding a dash of cayenne pepper or some hot sauce to your mixture. Start with just a pinch and taste as you go—it’s always easier to add more than to take it away!

In-N-Out Sauce
Method
- In a mixing bowl, combine mayonnaise, ketchup, sweet pickle relish, white vinegar, garlic powder, onion powder, paprika, salt, and black pepper.
- Whisk the ingredients together until smooth and well combined.
- Taste and adjust seasoning if necessary.
- Refrigerate for at least 30 minutes before serving to allow flavors to meld.















