
In-N-Out Burger is a popular fast-food chain that has cultivated a dedicated fan base. The chain is known for its strict adherence to a consistent menu across all locations, offering a limited range of burgers, fries, and beverages. However, the existence of a secret menu has sparked curiosity among patrons. This secret menu includes unique creations like the Protein-Style Burger, the Flying Dutchman, and the Cheesy Wiki grilled cheese. While In-N-Out has been flexible with customizations in the past, it now faces challenges due to social media attention and increasingly complex orders. Despite the secret menu's popularity, In-N-Out does not currently offer a mushroom burger, maintaining its traditional menu items and resisting the addition of new options.
| Characteristics | Values |
|---|---|
| Does In-N-Out have mushrooms? | No, In-N-Out does not offer fried mushroom burgers. |
| Customization | In-N-Out used to be flexible about customizing their burgers. However, due to the popularity of stunt-size burgers, they now cap the number of patties and buns at four each. |
| Secret Menu | In-N-Out has a secret menu with items like the Protein-Style Burger, Flying Dutchman, and the Cheesy Wiki grilled cheese. |
| Veggie Burgers | In-N-Out does not offer veggie burgers, but customers can order a grilled cheese or a bun with lettuce, tomato, sauce, onions, and cheese as a vegetarian option. |
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What You'll Learn

In-N-Out does not have mushroom burgers
In-N-Out is a popular burger chain known for its delicious food and loyal customer base. While the restaurant offers a variety of burgers, it does not include a mushroom burger on its menu. This may come as a surprise to some, as mushrooms are a common ingredient in burgers and go well with meat and vegetables.
In-N-Out has a strict policy of maintaining the same menu and ingredients at every location, and a mushroom burger is not part of their standard offerings. The chain has been consistent in its menu options for over 70 years, and any changes or additions are carefully considered to ensure the quality and efficiency of their service. While some customers may be disappointed that In-N-Out does not serve mushroom burgers, the restaurant has its reasons for sticking to a well-defined menu.
One of the main reasons for In-N-Out's success is its focus on simplicity and consistency. By offering a limited menu, the restaurant can ensure that each item is prepared with high-quality ingredients and consistent taste. Adding a mushroom burger would require additional ingredients, preparation methods, and quality control measures, potentially complicating their streamlined operations.
Additionally, In-N-Out has a secret menu that has gained popularity among its patrons. These secret menu items offer customization and unique flavor combinations, and some customers have even tried to create their own mushroom burgers by adding ingredients. However, the availability of these secret menu items may vary, and they are not officially recognized by the restaurant.
While In-N-Out does not have a mushroom burger on its menu, customers seeking a vegetarian option can order the grilled cheese, which can be customized with toppings such as lettuce, sauce, and tomatoes. For those looking for a meat option, the Protein-Style Burger is a low-carb, high-protein choice that can be made more filling by ordering multiple burgers.
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The chain has a strict uniform menu policy
In-N-Out Burger is a popular fast-food chain, particularly well-known for its dedication to maintaining a strict uniform menu policy across all its locations. This means that customers can expect to find the same menu items and ingredients at every In-N-Out Burger restaurant, ensuring a consistent dining experience regardless of their location.
While the chain offers a limited selection of customisation options, it prioritises uniformity and consistency in its menu offerings. This approach has been a longstanding tradition for the brand, with reports suggesting that In-N-Out Burger has maintained the same menu and ingredients for over 70 years. This consistency is valued by customers who appreciate knowing exactly what to expect when they visit any In-N-Out Burger location across the country.
However, this strict uniform menu policy has not prevented the emergence of a so-called "secret menu," which has gained popularity among regular patrons and enthusiasts of the chain. These secret menu items are not officially listed on the In-N-Out Burger menu but have become well-known among customers through word-of-mouth and online sources. The secret menu offers unique combinations and variations of the standard menu items, providing a level of customisation and novelty for those in the know.
While In-N-Out Burger employees are generally aware of these secret menu items and can prepare them upon request, some customisations may require more detailed explanations to ensure the desired outcome. The secret menu allows customers to experiment with different flavours and ingredients while still adhering to the overarching uniform menu policy of the chain. It represents a balance between consistency and innovation, providing a sense of exclusivity and community for those who are familiar with its offerings.
In summary, In-N-Out Burger's strict uniform menu policy has been a cornerstone of the brand's identity, fostering a sense of familiarity and reliability for its customers. While the secret menu adds an element of customisation, the chain's commitment to consistency in its menu offerings remains a key aspect of its appeal and continues to shape the dining experience at In-N-Out Burger locations nationwide.
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They have a secret menu with non-menu items
In-N-Out does not have mushrooms on its menu. However, they have a secret menu with non-menu items that are popular among regular patrons and In-N-Out enthusiasts. The In-N-Out employees generally know how to make them, so ordering them is easy. If the staff is unaware of a particular customization, customers can provide the exact order, including all the ingredients that need to be added or removed from the official menu items to create the secret menu item.
The secret menu includes the Protein-Style Burger, a low-carb, high-protein option with lettuce and tomatoes. There is also the Flying Dutchman, which is similar to the Protein-Style Burger but without the lettuce and tomatoes. For those who want a more filling option, ordering two or three Protein-Style Burgers is recommended.
Another secret menu item is the grilled cheese, which can be ordered with just cheese and bread or with burger toppings like lettuce, sauce, and tomatoes. To make it even cheesier, customers can order the Cheesy Wiki grilled cheese, which comes with four slices of cheese instead of the usual two. If you don't like melted cheese, you can order your grilled cheese "Doggy-Style," which means it will be served in a lettuce wrap with fries surrounding the cheese.
In the past, In-N-Out was known for its flexibility in customizing burgers. Some customers have shared their experiences with unique orders, such as a 10x10 or 11x11 burger challenge. However, due to the popularity of these stunt-size burgers and the negative attention they received on social media, management has since capped the number of patties per burger at four.
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Customisations are possible, but not always allowed
In-N-Out Burger does not offer mushroom burgers on its menu. However, customisations are possible at In-N-Out, but they are not always allowed. The burger chain is known for its strict adherence to maintaining the same menu and ingredients across all locations, but some customers have successfully requested customisations.
While In-N-Out does not have a veggie burger, customers can order a grilled cheese from the secret menu, which is suitable for those who do not eat meat. This can be customised with toppings such as lettuce, sauce, and tomatoes. For those who want a low-carb, high-protein option, the Protein-Style Burger can be ordered without the bun and with extra lettuce and tomatoes. If you want even more cheese, you can order the Cheesy Wiki grilled cheese, which comes with four slices of cheese instead of the usual two.
In the past, In-N-Out was reportedly more flexible with customisations. One customer recalled trying to get their buns flipped inside out, and another mentioned a 10x10 challenge that involved ordering an extremely large burger. However, due to the popularity of these customisations and the time they took to fulfil, management eventually put a limit on the number of patties that could be stacked, capping it at 4x4.
While In-N-Out does allow some customisations, it is important to note that not all requests may be granted. The availability of specific ingredients and the feasibility of the customisation can be limiting factors. Additionally, the decision to accommodate a customisation request may vary between different locations and staff members.
To increase the chances of getting your desired customisation, it is recommended to be specific and detailed in your order, providing a clear list of ingredients to be added or removed. While In-N-Out employees are generally aware of the secret menu items, it is always good to be prepared to explain your customisation request in more detail if needed.
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In-N-Out does not serve veggie burgers
In-N-Out Burger is a popular fast-food chain, particularly well-known in LA. The menu is simple, offering burgers, fries and shakes, with a few secret menu items, such as the famous Animal Style burger. However, In-N-Out does not serve veggie burgers.
The chain has a very streamlined process, with a limited number of ingredients. The walk-in refrigerators are designed to hold the current ingredients, with no room for anything else. In-N-Out has spent 80 years perfecting its menu and its cooking processes, so it is unlikely to change its operations now. The introduction of veggie burgers would require a separate grill and different cooking instructions, which would throw off the rhythm of the cooks, which is down to a science.
In-N-Out does offer some vegetarian options, such as the veggie sandwich (a burger minus the patty) and grilled cheese, which can also be ordered Animal Style. However, these are considered by some to be insufficient for vegetarians and vegans, who would like to see a veggie patty option.
The demand for vegan and vegetarian options is not currently strong enough for In-N-Out to consider changing its operations. The chain is consistent in its simplicity and its restaurants run like a well-oiled machine. It is unlikely that In-N-Out will introduce a veggie burger any time soon.
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Frequently asked questions
No, In-N-Out does not serve mushrooms.
No, In-N-Out does not serve a mushroom burger. They also do not offer veggie burgers.
Yes, In-N-Out has a secret menu. The staff are generally aware of the secret menu items and how to make them.
The secret menu includes the Protein-Style Burger, a low-carb, high-protein option, and the Flying Dutchman, which is similar to the Protein-Style Burger but without the lettuce and tomatoes. The Cheesy Wiki is another secret menu item, which is a grilled cheese sandwich with four slices of cheese instead of two.
Yes, you can customize your burger at In-N-Out. In the past, the restaurant was very flexible with customizations. However, due to the popularity of stunt-size burgers on social media, management has capped the number of patties in a burger to four.

























