RESEARCH · THE ALLERGEN HEATMAP

The Top-9 allergen profile of every fast-food fry.

54 chains across the FDA Top-9 allergens — milk, egg, fish, shellfish, tree nut, peanut, wheat, soy, sesame. 350 of 486 cells are allergen-free; 115 are cross-contact risk; 21 are direct ingredient. Tap any chain name for the full breakdown. Filter to "safe for milk" or combine multiple to plan around real-world multi-allergy diets.

7 9/9 clean
chains

350 free
cells

115 cross-contact
risk

21 direct
ingredient

Show only chains safe for:

Showing all 54 chains

✓ Free — no allergen, no cross-contact ! Cross-contact — shared fryer / shared kitchen ✗ Present — direct ingredient

Chain · Allergen	Milk	Egg	Fish	Shellfish	Tree nut	Peanut	Wheat	Soy	Sesame
Arby's	✓	✓	!	✓	✓	✓	✗	✗	✓
Bojangles	✓	✓	✓	✓	✓	✓	!	!	✓
Braum's	✓	✓	✓	✓	✓	✓	!	!	✓
Burger King	✓	✓	!	✓	✓	✓	✓	✗	✓
BurgerFi	✓	✓	✓	✓	✓	✓	!	!	✓
Bush's Chicken	!	!	✓	✓	✓	✓	!	!	✓
Checkers / Rally's	✓	✓	!	✓	✓	✓	✗	✗	✓
Chick-fil-A	✓	✓	✓	✓	✓	✓	✓	✓	✓
Chicken Express	!	!	!	✓	✓	✓	!	!	✓
City Barbeque	✓	✓	✓	✓	✓	✓	!	!	✓
Cook Out	✓	✓	✓	✓	✓	✓	!	!	✓
Culver's	✓	✓	!	!	✓	✓	✓	!	✓
Dairy Queen	✓	✓	!	!	✓	✓	✓	✗	✓
Del Taco	✓	✓	!	✓	✓	✓	✓	!	✓
Dick's Drive-In	✓	✓	✓	✓	✓	✓	✓	✓	✓
Dickey's Barbecue Pit	✓	✓	✓	✓	✓	✓	!	!	✓
Elevation Burger	✓	✓	✓	✓	✓	✓	✓	✓	✓
Famous Dave's	!	!	!	✓	✓	✓	!	✗	✓
Fatburger	!	✓	✓	✓	✓	✓	!	!	✓
Five Guys	✓	✓	✓	✓	✓	✗	✓	✓	✓
Freddy's	✓	✓	✓	✓	✓	✓	✓	!	✓
Golden Chick	!	!	!	✓	✓	✓	!	!	✓
Hardee's / Carl's Jr.	✓	✓	✓	✓	✓	✓	✓	✓	✓
Hopdoddy Burger Bar	✓	✓	✓	✓	✓	✓	✓	✓	✓
In-N-Out	✓	✓	✓	✓	✓	✓	✓	✓	✓
Jack in the Box	✓	✓	!	✓	✓	✓	!	✗	✓
Jim 'N Nick's Bar-B-Q	✓	✓	✓	✓	✓	✓	!	!	✓
KFC	✓	✓	✓	✓	✓	✓	✗	✗	✓
Krystal	✓	✓	✓	✓	✓	✓	!	✓	✓
L&L Hawaiian Barbecue	!	!	!	!	✓	✓	!	!	!
Layne's Chicken Fingers	!	!	✓	✓	✓	✓	!	!	✓
McDonald's	✗	✓	!	✓	✓	✓	✗	✗	✓
Mission BBQ	✓	✓	✓	✓	✓	✓	✓	✗	✓
MOOYAH Burgers	✓	✓	✓	✓	✓	✓	!	!	✓
P. Terry's Burger Stand	✓	✓	✓	✓	✓	✓	✓	✓	✓
Popeyes	✓	✓	!	!	✓	✓	✓	✓	✓
Portillo's	✓	✓	!	✓	✓	✓	✓	!	✓
Raising Cane's	✓	✓	✓	✓	✓	✓	✓	!	✓
Runza	!	!	!	!	!	!	!	!	✓
Shake Shack	✓	✓	✓	✓	✓	✓	✓	!	✓
Slim Chickens	!	!	!	✓	!	!	!	!	✓
Smashburger	!	✓	✓	✓	✓	✓	!	!	✓
Smokey Bones	!	!	✓	✓	✓	✓	!	!	✓
Sonic Drive-In	✓	✓	!	✓	✓	✓	✓	✗	✓
Sonny's BBQ	!	✓	✓	✓	✓	✓	!	✗	✓
Steak 'n Shake	✓	✓	✓	✓	✓	✓	✓	!	✓
Taco Bell	!	✓	✓	✓	✓	✓	✗	✗	✓
The Habit Burger Grill	!	✓	✓	✓	✓	✓	!	✗	✓
Wendy's	✓	✓	!	✓	✓	✓	✓	✗	✓
Whataburger	✓	✓	!	✓	✓	✓	✓	!	✓
White Castle	✓	✓	!	!	✓	✓	✓	!	✓
Wingstop	✓	✓	✓	✓	✓	✓	✓	!	✓
Woody's Bar-B-Q	!	✓	!	✓	✓	✓	!	!	✓
Zaxby's	✓	✓	!	!	!	!	✓	!	!

✓ Free — no allergen, no cross-contact ! Cross-contact — shared fryer / shared kitchen ✗ Present — direct ingredient

How we classify each cell An allergen is marked Free when the chain's published disclosures show no presence in the fry's ingredient list AND no shared cooking environment that creates cross-contact risk. Cross-contact means the allergen is not in the fry recipe but enters via shared equipment — a fryer used for breaded chicken (wheat), an oil bath shared with dairy-containing onion rings, a kitchen where the fry-prep surface is also used for fish. Present means the allergen is an actual ingredient of the fry itself — the wheat flour coating on Arby's curly fries, the soy in soybean-only cooking oil, the peanut in Five Guys' frying medium. Multiple chains use refined oils that are FDA-exempt from allergen labeling (refined peanut oil at Five Guys, refined soybean oil at many chains) — we still mark these as present because the source is still a top-9 allergen and severe allergies warrant the warning.

The Top-9 allergen profile of every fast-food fry.

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