In-N-Out is a staple for West Coast burger lovers, but the standard menu only tells half the story.
To truly experience what this chain has to offer, you need to explore the “secret menu,” which features approximately 20 hidden items.
These variations allow you to customize your meal for better flavor, dietary needs, or pure indulgence.
Whether you’re looking for more meat, a bunless option, or even a free souvenir, the secret menu has you covered. Here are the top 10 items to elevate your next visit to In-N-Out.
1. The Mustard Fried Patty
The mustard fried patty is a game-changer for flavor enthusiasts. This unique cooking method involves the cook squirting mustard onto the grill before placing the meat patty directly on top of it.
As the patty fries, the mustard sears into the meat, creating a tangy, savory crust that enhances every bite.
Even if you aren’t typically a fan of mustard, the cooking process mellows the flavor into something truly delicious.
It is important to note that this preparation usually includes pickles by default, so if you prefer your burger without them, be sure to specify that during your order.
2. The 3×3 or 4×4 Burger
For those with a serious appetite, the standard Double-Double might not be enough. Fortunately, you can order a 3×3 or a 4×4 burger to satisfy your cravings.
A 3×3 consists of three beef patties and three slices of cheese, providing a substantial meal that remains relatively easy to eat. If you want to push the limits, the 4×4 offers four of each.
These burgers are designed for guests who want more meat and cheese than the traditional menu provides. While large, the 3×3 is often cited as being very filling while still maintaining a manageable size for most diners.
3. Animal Style Burger
The Animal Style burger is perhaps the most famous “secret” at In-N-Out. While the provided sources do not detail the specific ingredients, they highlight that this item is a massive fan favorite that many people love.
It represents the ultimate level of customization for those who want a more intense flavor profile than a standard cheeseburger.
If you are looking for a signature experience that defines the West Coast burger culture, ordering your burger “Animal Style” is the way to go. It is a quintessential hack for anyone wanting to move beyond the basic menu offerings.
4. Protein Style Burger
If you are looking to cut back on carbs or simply want a lighter meal, the Protein Style burger is the perfect solution. Instead of being served on a toasted sponge dough bun, this burger is wrapped in fresh, crisp lettuce.
This allows you to enjoy the high-quality beef and toppings without the heavy feel of bread. It is a popular choice for health-conscious diners or those with dietary restrictions.
Despite the lack of a bun, it remains a messy and delicious way to enjoy the core flavors of an In-N-Out burger while staying “light”.
5. The Flying Dutchman
The Flying Dutchman is arguably the most unusual item on the secret menu. This order consists of two beef patties and two slices of cheese—and nothing else.
There is no bun, no lettuce wrap, and no vegetables; it is just the meat and cheese. This “weird” but effective item is a dream for keto enthusiasts or anyone who wants to focus entirely on the savory protein.
Because it lacks any structural support from a bun or lettuce, it is often eaten with a fork and knife or handled very carefully by meat lovers.
6. Cheese Fries
In-N-Out’s standard fries are a classic, but you can upgrade them significantly by ordering cheese fries.
To create this item, the kitchen takes a standard order of fries and melts slices of cheese directly over the top.
The result is a gooey, salty treat that adds a layer of indulgence to your side dish. It is a simple modification, but many fans find it to be an awesome way to enjoy their potatoes.
It transforms a basic side into a more substantial snack that pairs perfectly with any of the secret menu burgers.
7. Grilled Cheese
For those who do not eat beef or simply want a meatless meal, the grilled cheese is the ultimate go-to option.
This isn’t your average home-cooked sandwich; it uses the same toasted buns and fresh toppings found on their burgers, but it swaps the meat for extra melted cheese.
You can still customize it with onions, lettuce, and tomato to make it a hearty vegetarian meal. It is a staple for non-beef eaters who still want to participate in the In-N-Out experience without the patty.
8. Neapolitan Shake
If you can’t decide between chocolate, vanilla, or strawberry, the Neapolitan shake allows you to have all three at once.
This secret menu dessert combines all three traditional flavors into a single cup. As you sip, the flavors blend together, offering a nostalgic and creamy experience that covers the entire spectrum of In-N-Out’s shake offerings.
It is a favorite for those who want a bit of variety in their dessert and is a perfect way to round off a heavy meal with a sweet, tri-colored treat.
9. Side of Chili Peppers
For diners who crave a bit of heat, you can ask for a side of chili peppers with your order. These are not typically listed on the menu but are available upon request to add a spicy kick to your meal.
You can eat them on the side between bites of your burger or chop them up to add directly to your fries or sandwich.
Asking for these peppers is a pro tip for advanced users who find the standard burger flavor profile a bit too mild and want to increase the spice level.
10. The Free In-N-Out Hat
While not a food item, the In-N-Out hat is a “secret” perk that many people overlook. You can actually get one of the paper hats that the employees wear for free just by asking.
These hats are iconic and can even be used as part of a costume if you want to look like a cook for Halloween or a themed party.
It is a fun, free souvenir that adds a bit of personality to your visit. Along with shirts and pins, these hats are part of the brand’s distinct West Coast culture.
Declan Kelly