Last Updated June 2nd, 2023 at 02:25 pm by Lisa
Make one of the best burger sauces at home with this simple copycat of the classic In-N-Out spread from the iconic West Coast drive-through chain that began in Southern California. This tangy, creamy sauce is the finishing touch on a juicy burger and brings that familiar “animal style” flavor to your grill or kitchen.
In Southern California, ordering a Double-Double “animal style” with fries and a soda is practically a tradition. The real In-N-Out experience includes a few tricks—mustard-seared patties, melty American cheese, toasted buns, and that special spread. Below you’ll find a reliable copycat sauce recipe, storage tips, and ideas for building an authentic-style burger at home.

In-N-Out Sauce Copycat Ingredients
½ cup mayonnaise
2 tablespoons ketchup
2 tablespoons dill pickle relish (avoid sweet relish for a more authentic tang)
2 teaspoons white wine vinegar (or regular white vinegar)
½ teaspoon sugar

In-N-Out Copycat Sauce Recipe
Combine all ingredients in a medium bowl and whisk until smooth: mayonnaise, ketchup, dill pickle relish, white wine vinegar, and sugar. Taste and adjust vinegar or sugar to balance tang and sweetness to your preference.
Transfer the sauce to an airtight container and refrigerate. It keeps well for up to a month. For convenient serving at cookouts, fill a clean squeeze bottle, but do not leave the sauce at room temperature for more than an hour to keep it safe.
Tip: Using dill pickle relish instead of sweet relish preserves the tangy flavor that closely resembles the original spread. A small splash of vinegar brightens the sauce and helps balance the sweetness.

Perfect Copycat In-N-Out Burgers
To recreate a classic In-N-Out-style burger, start with quality ingredients and simple technique. The chain is known for keeping things fresh and straightforward.
- Form thin patties of American ground beef and season lightly. For an authentic sear, spread a thin layer of yellow mustard on the griddle or skillet before placing the patty; the mustard caramelizes and adds characteristic flavor.
- Use real American cheese and place it on the hot patty so it melts evenly.
- Toast the buns on the griddle until golden brown for a slightly crisp surface.
- Spread a couple of tablespoons of the copycat sauce on both the bottom and top buns.
- Layer 4–5 dill pickle chips on the bottom bun, then add a slice of tomato, a leaf of iceberg lettuce, and a raw or grilled onion slice if you like.
- Place the mustard-seared patty(s) with melted cheese on the stacked toppings.
- For “Animal Style,” top with extra spread and finely chopped caramelized onions.
Best Topping Ideas For Burgers
There are countless ways to dress up a burger. Here are favorite options that pair beautifully with the tangy copycat sauce:
- Crispy bacon
- Grilled or caramelized onions
- Sautéed mushrooms
- Pickle chips or quick refrigerator pickles
- Ketchup, mustard, or extra mayonnaise
- BBQ sauce or remoulade for regional twists
- Fresh jalapeños or roasted Hatch chiles
- Cheese variations: Pepper Jack, blue cheese, or sharp cheddar
- Guacamole or creamy horseradish sauce
- Fried onion strings for crunch
More Burger Recipes and Tips
Try these ideas for grilling season: seasoned burger patties, cheeseburger sliders, or baked mini burgers—each is enhanced by a good burger sauce. A simple homemade seasoning blend elevates plain beef into juicy, flavorful burgers ideal for backyard cookouts and gatherings.
In-N-Out Burger FAQ
In-N-Out Burger is an American drive-through restaurant chain that began in Baldwin Park, California, in 1948. It was founded by Harry and Esther Snyder as a family-owned business.
“Animal style” typically refers to a mustard-seared beef patty cooked on a flat top, extra spread, grilled or chopped caramelized onions, and the usual lettuce, tomato, and pickle chips—resulting in a tangy, savory burger experience.
A Double-Double contains two beef patties and two slices of American cheese on a toasted bun, with lettuce, tomato, pickles, onions (raw or grilled), and spread sauce.
Yes. Some well-known off-menu choices include animal-style fries (fries topped with spread and caramelized onions), “3×3” or “4×4” stacked burgers, protein-style (lettuce-wrapped) burgers, and small grilled patties for pets called puppy patties at some locations.

Burger Sauce Recipe – In-N-Out “Animal Style” Spread
Ingredients
- ½ cup mayonnaise
- 2 tablespoons ketchup
- 2 tablespoons dill pickle relish
- 2 teaspoons white wine vinegar
- ½ teaspoon sugar
Instructions
- Whisk all ingredients together in a medium bowl until smooth and evenly combined.
- Taste and adjust vinegar or sugar for desired balance.
- Store in an airtight container in the refrigerator for up to a month. Use a squeeze bottle for easy serving; avoid leaving the sauce at room temperature for extended periods.
Notes
Use dill relish rather than sweet relish to retain the tang that characterizes the original spread. The vinegar provides bright acidity to complement the sugar and mayonnaise, creating a more complex, satisfying flavor.
Nutrition (approx. per serving)
Calories and macronutrient values will vary by brand of ingredients used. This sauce is rich and flavorful—serve in small amounts to complement burgers and fries.