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The U.S. french-fry problem
McDonald’s U.S. french fries are infamous. The problem is two-fold:
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- Natural beef flavoring contains hydrolyzed wheat and is added to the par-cooking oil at the factory.
- The in-store fryer cooks Filet-O-Fish, McChicken patties, and Chicken McNuggets in the same oil — massive cross-contact.
This is U.S.-specific. McDonald’s fries in the UK, Canada, Australia, and most EU countries are made with sunflower or canola oil and no wheat-derived flavoring — they’re gluten free there.
What’s gluten free in the U.S.
- Plain grilled chicken (from a salad order) — request it plain, no marinade variations
- Side Salad — without crispy noodles or croutons
- Bacon Ranch Salad — without crispy chicken
- Apple Slices
- Fruit & Maple Oatmeal — actually contains OATS without GF certification, NOT safe
- Yogurt Parfait — without granola
- Drinks — Coca-Cola, juices, milk, coffee
What to avoid in the U.S.
- French fries (wheat + shared oil)
- Hash Browns (shared fryer)
- Chicken McNuggets (breaded + fried in shared oil)
- Filet-O-Fish (breaded + bun)
- All burgers (buns contain wheat)
- Crispy chicken sandwiches
- Big Mac sauce (contains wheat)
- Egg McMuffin, all biscuits
- All wraps
International differences
| Country | Fries GF? | Hash Browns GF? |
|---|---|---|
| USA | No (wheat) | No (shared fryer) |
| UK | Yes | Yes |
| Canada | Yes | Yes |
| Australia | Yes | Yes |
| Germany, France | Yes | Yes |
Always confirm with the local store, as supply chains change.
Sources
- McDonald's USA Allergen Information — McDonald's (2024)
- Beyond Celiac — Fast Food Guide — Beyond Celiac (2024)