Dave's Single from Wendy's: Allergens at a Glance
The honest verdict
Dave's Single · Wendy's
The Dave's Single is a quarter-pound fresh beef patty topped with American cheese, lettuce, tomato, pickles, onion, ketchup, and mayonnaise on a toasted bun. The allergen profile is anchored by wheat from the bun, milk from the cheese and potentially the bun, and egg from the mayonnaise. Soy is present in refined oils used in the mayo and bun. Sesame may appear on the bun. The single-patty format is the base of the Dave's family — the Double and Triple add more beef patties (same allergens), while the Baconator adds bacon and a different cheese sauce. Cross-contact on shared grills and prep surfaces is standard. Confirm with your specific Wendy's location before ordering.
Allergen details change and vary by location. This is a general guide — always confirm with the restaurant before ordering. Not official or medical advice.
Key facts
Wendy's Dave's Single bun is wheat-based, making the bun the primary gluten source in the sandwich.
American cheese on the Dave's Single is a direct source of milk protein (casein).
FDA — Food Allergen Labeling and Consumer Protection Act (FALCPA)
Mayonnaise is traditionally made with egg yolks, making the Dave's Single a source of egg unless ordered without mayo.
Every major allergen, one clear grid
Each of the nine major allergens marked for Dave's Single at Wendy's — Contains, May contain (cross-contact or varies), or Free. Anything we couldn't confirm defaults to "may contain," because a shared kitchen can't be ruled out without the restaurant's official menu.
- MilkContains
American cheese is a direct source of milk. The bun may also contain milk or butter. Mayonnaise is typically egg-based and milk-free, but some formulations include whey. Ask about the bun and cheese specifically.
- EggContains
Mayonnaise is made with egg yolks. The bun may also contain egg in some recipes. If you order without mayo, egg is removed from the sandwich — but confirm the bun separately.
- Wheat / GlutenContains
The toasted bun is wheat-based. There is no standard gluten-free bun option at Wendy's. The beef patty itself is gluten-free, but the bun is the primary wheat source.
- SoyMay contain
Refined soybean oil is used in the mayonnaise and likely in the bun. Highly refined soy oil is FDA-exempt from allergen labeling and tolerated by most with soy allergy. Those with severe soy sensitivity should confirm the specific oil types used.
- PeanutFree
Peanut is not an ingredient in the Dave's Single components. Cross-contact is very unlikely in a standard Wendy's kitchen.
- Tree NutFree
Tree nuts are not an ingredient in the beef patty, bun, cheese, or standard toppings.
- FishFree
Fish is not an ingredient in the Dave's Single. The fish fillet sandwich is a separate menu item with its own fryer.
- ShellfishFree
Shellfish is not an ingredient in the Dave's Single or its standard toppings.
- SesameMay contain
The bun may be topped with sesame seeds. Some Wendy's locations use sesame seed buns for their sandwiches. Confirm the bun type with your specific location.
“May contain” means cross-contact is possible or the answer varies by location — not that the allergen is a listed ingredient. For a severe allergy, treat “may contain” the same as “contains” until the restaurant confirms otherwise.
Small changes that remove an allergen
Simple modifications that can take an allergen off your dave's single. Always name your allergy when you order and ask staff to confirm — a modification only helps if the kitchen prepares it separately.
Order without the bun (lettuce wrap or bowl)
Order without cheese
Order without mayonnaise
Request a plain patty with no bun, cheese, or mayo
A modification lowers exposure but doesn't erase cross-contact from shared fryers, grills, or prep surfaces. For a severe allergy, confirm the prep with a manager before you eat.
Read this before you order
Cross-contact & severe allergies
A “free of” mark on the grid above means the allergen isn't an ingredient — it doesn't mean the item was made in an allergen-free kitchen. Two things matter most:
Shared fryers & equipment
Shared grills and prep surfaces at Wendy's mean the beef patty may contact bun crumbs, cheese residue, or other allergens from previous orders. The same spatula and grill surface are used for all burger patties. If you have a severe allergy, ask staff to use a clean spatula and a fresh grill surface. Cross-contact is the same for the Single, Double, Triple, and Baconator — the patty count does not change the risk.
If your allergy is severe
For anaphylactic allergy to wheat, milk, egg, or sesame, a bunless or modified Dave's Single is not guaranteed safe due to shared grills and prep surfaces. Confirm with the restaurant manager whether a dedicated preparation area can be used. Carry your epinephrine auto-injector. If you cannot confirm safe preparation, consider a different restaurant entirely.
This guidance is general and can't account for how any single location prepares your food. The restaurant's staff and official allergen menu are the final word — when in doubt, ask, or choose something else.
❓Frequently Asked Questions
The allergen profile is identical across the Dave's Single, Double, and Triple — the only difference is the number of beef patties. All three use the same bun, cheese, mayo, and toppings. The Double has two patties, the Triple has three. If you are allergic to beef (rare), the patty count matters. For all other allergens (wheat, milk, egg, soy, sesame), the Single, Double, and Triple are interchangeable.
No, not as served. The bun is wheat-based and contains gluten. The beef patty and most toppings (lettuce, tomato, pickles, onion) are gluten-free by ingredient, but cross-contact on the shared grill is possible. A lettuce-wrapped version removes the bun but does not eliminate cross-contact risk from the grill. Wendy's does not offer a certified gluten-free bun.
Yes, the American cheese is a direct dairy source. The bun may also contain milk or butter. Mayonnaise is typically dairy-free, but some formulations include whey. If you order without cheese, you remove the primary dairy source, but confirm the bun and mayo separately. The beef patty itself is dairy-free.
No. Standard mayonnaise is made with egg yolks. Wendy's uses a traditional mayonnaise formulation that contains egg. If you have an egg allergy, order the Dave's Single without mayonnaise. The sandwich will still have ketchup and mustard as condiment options, which are typically egg-free.
The Baconator adds bacon and a different cheese sauce (often a creamy cheese sauce rather than a slice of American cheese). Bacon is typically pork-based and free of the Big-9 allergens, but the cheese sauce may contain additional milk and soy. The Baconator also has two beef patties versus the Single's one. For a detailed comparison, see our Baconator page. The bun, mayo, and toppings are the same.
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Please verify before ordering
Allergen info changes and varies by location
Recipes, suppliers, and preparation methods change often and differ between locations, so the details here can go out of date or not match your specific Wendy's restaurant. Always confirm directly with the restaurant and check its official allergen menu before ordering. This page is a general research summary — it is not official information from Wendy's, and it is not medical advice. If you have a food allergy, decisions about what is safe to eat should be made with the restaurant and, where relevant, your healthcare provider.