Mom's Best Recipes
Recipe

In-N-Out Style Sauce

A quick copycat of the classic burger spread: mayo-forward, ketchup-sweet, pickle-tangy, and ridiculously good on fries.

Author By Matt Campbell
4.8
A small bowl of creamy pinkish burger sauce with visible pickle relish, set on a wooden cutting board beside fries and a burger bun on a bright kitchen counter

I love a sauce that makes a basic Tuesday night burger feel like it has a fan club. This In-N-Out style sauce copycat is that kind of magic. It is creamy, tangy, a little sweet, and salty in a way that makes you keep dipping even when you swore you were done with fries.

No weird ingredients. No blender. Just a bowl, a spoon, and a couple minutes of stirring while your patties do their thing. Use it like a spread on burgers, a dip for fries, or the secret weapon that upgrades a turkey sandwich from “fine” to “wait, what is in this?”

Animal Style tip: If you want the full at-home experience, pair this with caramelized onions and melted American cheese for burgers and fries. It is the fast-food comfort thing, but in your kitchen.

Measured mayonnaise, ketchup, sweet pickle relish, mustard, white vinegar, and spices arranged in small bowls on a clean kitchen counter

Why It Works

  • Balanced flavor fast: mayo gives it body, ketchup brings sweetness, relish adds tang, and vinegar perks everything up.
  • Real texture: relish and a little onion powder give you that classic speckled, craveable spread vibe.
  • Better after a quick rest: 15 minutes in the fridge lets the flavors settle and mellow into that just-right burger spread zone.
  • Flexible: tweak it spicy, make it extra tangy, or keep it classic depending on your mood and your fridge.

Pairs Well With

Storage Tips

Refrigerate: Store in an airtight container for up to 5 to 7 days if kept consistently refrigerated. Give it a quick stir before using.

Food safety note: Since this is mayo-based, keep it chilled and do not leave it out at room temperature for more than 2 hours, or 1 hour if the temperature is above 90°F (32°C).

Freezing: I do not recommend freezing. Mayo-based sauces can separate and turn grainy after thawing.

A small glass jar filled with creamy burger sauce sitting on a refrigerator shelf beside everyday condiments

Common Questions

Is In-N-Out sauce just Thousand Island?

They are cousins, not twins. Thousand Island typically includes more add-ins and can may include things like chopped hard-boiled egg and even olives, depending on the brand or region. This copycat is closer to a burger spread, with relish, a touch of vinegar, and seasonings that keep it sharp and snacky.

How do I make Animal Style at home?

This spread is the starting point. For the full Animal Style vibe, add caramelized onions (or griddled chopped onions) and melted American cheese. For fries, drizzle warm fries with the sauce, top with cheese, then pile on the onions. For burgers, spread it on the bun and go heavy on the onions and cheese.

What kind of relish should I use?

Sweet pickle relish is the most classic move for that familiar flavor. If you only have dill relish, it still works. Expect a more tangy, less sweet sauce. You can add a tiny pinch of sugar if you want to balance it back out.

Can I make it without relish?

Yes. Finely chop 1 to 2 tablespoons of pickles (dill or bread-and-butter) and use those instead. If your pickles are not sweet, add a small pinch of sugar or a tiny extra squeeze of ketchup.

Can I use pickle juice instead of vinegar?

Absolutely. Dill pickle juice is great here and gives you a little extra punch. Start with 1 teaspoon, then add a few drops more to taste.

How do I make it spicy?

Add 1 to 2 teaspoons of hot sauce, a pinch of cayenne, or 1 teaspoon of finely minced pickled jalapeño. Let it sit for 10 minutes, then taste and adjust.

Why does my sauce taste too mayo-heavy?

Usually it just needs more acid and salt. Add a few drops more vinegar or pickle juice, plus a small pinch of salt. Then re-taste. Sauces wake up with seasoning.

How long should I chill it?

It is good right away, but 15 minutes in the fridge helps. If you have time, 30 to 60 minutes makes it even more cohesive and scoopable.

I started making this when I realized my “quick burger night” was not actually quick because I was always hunting for something to make it feel special. This sauce fixed that. It takes less time than preheating a pan, and suddenly the whole meal has that fast-food comfort thing going on. I also love it because it gives you permission to be a little chaotic in the kitchen. Dip a grilled cheese in it. Put it on a breakfast sandwich. Nobody has to know.