French Onion Soup
A traditional soup made of caramelized onions and beef stock, topped with a slice of toasted bread and melted Gruyère cheese.
Allergen data cross-referenced against published allergen databases.
Your dietary restrictions
The full allergen breakdown is below. Select your restrictions to see a personalized safety status.
Full allergen breakdown
Ingredients
- onions
- beef stock
- baguette
- Gruyère cheese (Dairy)
- butter (Dairy)
- white wine
Hidden Ingredients
These ingredients are not typically listed on menus but are present in traditional preparations.
- wheat flour
Allergen Breakdown
Dairy-Free
Likely contains restrictionContains butter in the soup base and melted Gruyère cheese on top.
Gluten-Free
Likely contains restrictionTopped with a toasted wheat baguette slice; soup may also be thickened with flour.
Peanut-Free
Likely OKPeanuts are not used in traditional French onion soup preparation.
Tree Nut-Free
Likely OKTree nuts are not used in traditional French onion soup preparation.
Shellfish-Free
Likely OKNo shellfish ingredients are used.
Egg-Free
Likely OKTraditional recipes do not contain egg.
Fish-Free
Likely OKMade with beef stock; no fish ingredients are used.
Soy-Free
Likely OKSoy is not a traditional ingredient.
Sesame-Free
Likely OKSesame is not used.
Vegetarian
Likely contains restrictionTraditionally prepared using beef stock (fond de bœuf).
| Restriction | Status | Notes |
|---|---|---|
| Dairy-Free | Likely contains restriction | Contains butter in the soup base and melted Gruyère cheese on top. |
| Gluten-Free | Likely contains restriction | Topped with a toasted wheat baguette slice; soup may also be thickened with flour. |
| Peanut-Free | Likely OK | Peanuts are not used in traditional French onion soup preparation. |
| Tree Nut-Free | Likely OK | Tree nuts are not used in traditional French onion soup preparation. |
| Shellfish-Free | Likely OK | No shellfish ingredients are used. |
| Egg-Free | Likely OK | Traditional recipes do not contain egg. |
| Fish-Free | Likely OK | Made with beef stock; no fish ingredients are used. |
| Soy-Free | Likely OK | Soy is not a traditional ingredient. |
| Sesame-Free | Likely OK | Sesame is not used. |
| Vegetarian | Likely contains restriction | Traditionally prepared using beef stock (fond de bœuf). |
Key risk: The soup base often starts with onions caramelized in butter and may be thickened with flour. It is topped with wheat bread and melted cheese, making it highly unsafe for dairy and gluten allergies.
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Scan a menu nowImportant: Dish Scout is a reference guide, not medical advice. Traditional recipes vary by restaurant, region, and chef. Always verify ingredients with restaurant staff before ordering. When in doubt, don't eat it.