Five Guys' Cooking Process: What's Used for What?
At Five Guys, the culinary process is a key part of their brand identity, and the use of peanut oil is central to that process—but not for everything. To understand if there is peanut oil in Five Guys burgers, you need to differentiate between the cooking methods for their various menu items. The simple answer is that the beef patties for their burgers are grilled on a flat-top grill without any added oil. The surface is seasoned only with the natural fats from the burgers themselves. However, their popular fries are famously cooked in 100% refined peanut oil, and free peanuts are available in store, which means a high potential for allergen exposure throughout the restaurant.
The Allergic Diner: Understanding the Risk
For someone with a peanut allergy, knowing that the burger itself isn't cooked in peanut oil might seem like a green light, but this is a dangerous assumption. The high volume of peanuts and peanut oil present in the Five Guys kitchen and dining area creates an environment where cross-contamination is a serious, unavoidable risk. A single restaurant can contain large bags of peanuts in the open, and the free-roaming shells on the floor are a common sight, contributing to the airborne and surface-level presence of the allergen. The same staff that handles the fries cooked in peanut oil will also be assembling the burgers, despite attempts to manage allergen orders.
Can Highly Refined Peanut Oil Be Safe?
Five Guys uses highly refined peanut oil for their fries, and some sources claim that highly refined oils have the peanut protein, which triggers allergic reactions, removed during processing. While this is often the case, many allergists and medical experts still advise those with severe peanut allergies to completely avoid restaurants where peanut oil is a core part of the kitchen. The refining process is not 100% foolproof, and the sheer volume of peanuts in the establishment means cross-contamination from other sources is always a possibility. A highly sensitive individual could still experience a severe reaction from coming into contact with trace amounts of peanut residue on surfaces, packaging, or from the shared air.
Burger vs. Fries: A Cooking Method Comparison
| Feature | Five Guys Burgers | Five Guys Fries | 
|---|---|---|
| Cooking Method | Grilled on a flat-top | Double-fried in deep fryers | 
| Oil Used | None (uses natural beef fat) | 100% Refined Peanut Oil | 
| Equipment Used | Dedicated flat-top grill | Dedicated deep fryers | 
| Allergen Risk | Indirect cross-contamination risk | Direct allergen contact and high cross-contamination risk | 
| Preparation | Handmade patties | Hand-cut potatoes | 
Safe Options and Allergen Management at Five Guys
For those with food allergies, especially peanut allergies, Five Guys presents a complex situation. While they make their allergen information public and list all ingredients, their policy is not to guarantee a completely allergen-free meal due to the constant presence of peanuts and peanut oil. Some locations may implement special procedures for allergy orders, like changing gloves and using clean utensils. However, since all fries are cooked in the same peanut oil and the dining area is full of peanuts, even these measures can't eliminate all risk.
For a truly peanut-free dining experience, it is best to avoid Five Guys altogether. Alternatives might include burger chains that do not use peanut oil for any items. When you must eat there, it is critical to inform staff of your allergy and to be aware of the inherent risks. You could opt for a burger with no fries and hope for the best regarding cross-contamination, but this is a gamble, especially for those with severe sensitivities.
The Final Word on Allergies and Five Guys
Ultimately, Five Guys' commitment to their brand identity—which prominently features peanuts—means that it is not a safe environment for individuals with serious peanut allergies. The burgers themselves may not be cooked in peanut oil, but the risk of cross-contamination from the fries and the free peanuts is too high to be safely ignored. This is a brand built around transparency regarding its ingredients and processes, and they are clear about the presence of peanuts. Allergic individuals must proceed with extreme caution or, ideally, choose a different establishment to ensure their safety. For more information, you can always consult their official FAQs page.
Conclusion
While Five Guys does not cook their burgers in peanut oil, using only the natural fats from the beef, the omnipresence of peanut oil in their kitchens and dining areas due to their fries and complimentary peanuts poses a significant risk of cross-contamination. The potential for peanut residue on surfaces, utensils, and in the air makes the restaurant an unsafe environment for individuals with severe peanut allergies, despite the use of refined peanut oil for frying. As a result, those with nut allergies are best advised to avoid eating at Five Guys entirely to eliminate the inherent danger.