Where does egg hide in food from a kitchen?

General examples are mayonnaise and aioli, hollandaise, batters and breadings, fresh pasta, brioche, glazes on buns and desserts such as custard and meringue. Ask what is in the sauce, the coating and the bread, since menus rarely say.

Are food service places required to label eggs on the menu?

The FDA says federal allergen labeling applies to foods a food service business packages and offers for sale, but not to food placed in a container in response to a customer order. A plated dish is not labeled that way, so ask the cook.

What is egg wash, and why does it matter?

Egg wash is beaten egg brushed on bread or pastry before baking to give it a shine. A bun or croissant that looks plain can carry it. Ask about the bread and the crust, since a menu description may not mention it.

How can I keep track of egg answers and share them with friends?

Mosey is a food app that lets you rate each dish and share what you find. Add a note about egg, tag it as one diner's note, follow friends and share a list of what the cook told you.

How to

Egg Allergy When Eating Out: Baking, Batters and Mayo

Mosey · November 11, 2026 · 5 min read

Egg allergy when eating out means learning that eggs work as glue, foam, gloss and cream in a kitchen, so they appear in dishes where nobody thinks of them as an ingredient. The FDA names eggs as one of nine major food allergens, and a plated dish is not labeled like a package.

Your doctor decides what is right for you. At the stove, a short question gets a short answer. Kitchens that bake and fry from scratch know exactly what goes into each tray and pan, and most are glad to be asked before the order is made rather than after.

What counts as an egg in an egg allergy when eating out?

The FDA's guidance says that for allergen labeling it considers eggs to be eggs from domesticated chickens, ducks, geese, quail and other fowl. Eggs from birds other than chickens must be named by the bird, such as "duck egg", in an ingredient list or a Contains statement.

For a diner that means a quail egg on a ramen bowl and a duck egg in a salad are in the same category as a chicken egg. If a menu says "farm egg" or "fresh egg", the question is still the same: is it in my dish, and in what form.

Where does mayonnaise hide?

Mayonnaise is egg yolk and oil, and it is one of the most common hidden sources. Aioli, hollandaise, tartar sauce, remoulade and many creamy dressings follow the same idea. A sandwich spread, a burger sauce, a coleslaw, a potato salad and a dip can all start from a mayonnaise base.

Ask for the sauce by its ingredients rather than its name. A plain request, such as "what is in the dressing?", gets a better answer than a guess at what it might be. "Special sauce" and "house dressing" are worth a question every time, and so is any dish described as creamy or aioli-style.

Do batters and breadings contain egg?

Often. A batter for fried fish, a breading for chicken cutlets, tempura and onion rings may all use egg as the binder, and some use only flour and water. The kitchen knows, and the menu usually does not say.

Ask about the coating, and about the fryer, since oil that cooked an egg-battered item also cooks the next order. These are general patterns in cooking. Also ask about meatballs, meatloaf and crab cakes, where egg holds the mixture together and does not show.

Which baked goods and desserts use egg?

Almost all of them, in some form, which is what makes the bakery case a place for caution.

Cakes, muffins, cookies and brownies.
Brioche, challah and other enriched breads.
Pastry glazed with egg wash, the shiny brush that gives a bun its gloss.
Meringue, custards, curds and ice cream.
Fresh pasta and some noodles, where eggs are part of the dough.

A bun that looks plain can carry a wash on its crust. Ask about the wash and about the bread, and about whether a sandwich is toasted on a shared surface.

Brunch deserves a note of its own, because eggs are the headline there. Benedicts, scrambles, frittatas and French toast all lean on them, and the sides can too: a pancake batter, a quiche, a muffin from the basket. If you are eating with a group, choose a dish early and let the table know, so no one passes you a plate meant for someone else, and so a friend can repeat your question to the server if the room is loud.

How do you ask about cross-contact with egg?

Cross-contact is when an allergen gets into a food through a shared pan, griddle, spatula or surface. Egg is a classic breakfast item, so a flat-top grill that makes scrambled eggs hosts your order next. Short questions help:

Is my food cooked on the same surface as the eggs?
Can you use a clean pan and a clean utensil?
Is the sauce made in advance with egg?

The FDA says the federal allergen labeling law does not address advisory statements such as "may contain", and the guidance calls them voluntary. A menu that is silent on the point has not answered it, and the answer should come from the cook.

How can Mosey help you remember what the cook said?

Rate the dish and record the answer in your note: the wash, the coating, the sauce. Pick a tag for the visit, keeping in mind that a tag is one diner's note and never a promise. If a friend avoids eggs too, follow them and you will see the dishes they rated and saved next to your own.

The app can also hide dishes whose place has listed eggs. Choose Eggs and those dishes disappear from a menu, the Dishes page and search, while dishes with nothing filled in remain and say they are not listed. It never filters places, and the choice stays on your phone. Not listed is silence, so ask. The ratings page covers how dish notes work.

What else covers eating out with allergies?

Mosey costs a place nothing to list, adds no hidden fees and has affordable tools, which helps neighborhood bakeries and cafes keep serving the people nearby. A place can declare its allergens for each dish in its own dashboard.

At your next brunch, get the Mosey app, rate the dish and save the answer in a list for the next time.

Questions

Common questions

What does the FDA count as an egg?
The FDA considers eggs to be eggs from domesticated chickens, ducks, geese, quail and other fowl. Eggs from birds other than chickens must be named by the bird, such as duck egg, in an ingredient list or a Contains statement.
Where does egg hide in food from a kitchen?
General examples are mayonnaise and aioli, hollandaise, batters and breadings, fresh pasta, brioche, glazes on buns and desserts such as custard and meringue. Ask what is in the sauce, the coating and the bread, since menus rarely say.
Are food service places required to label eggs on the menu?
The FDA says federal allergen labeling applies to foods a food service business packages and offers for sale, but not to food placed in a container in response to a customer order. A plated dish is not labeled that way, so ask the cook.
What is egg wash, and why does it matter?
Egg wash is beaten egg brushed on bread or pastry before baking to give it a shine. A bun or croissant that looks plain can carry it. Ask about the bread and the crust, since a menu description may not mention it.
How can I keep track of egg answers and share them with friends?
Mosey is a food app that lets you rate each dish and share what you find. Add a note about egg, tag it as one diner's note, follow friends and share a list of what the cook told you.