Front of house · 6 min read

What to Do When a Guest Says They Have a Food Allergy

Use this server script for a food allergy guest, then check ingredients, shared equipment, and the kitchen’s preparation steps before responding.

By the Can I Dine?™ team · Updated

Key takeaways

  • Thank the guest, repeat the allergen, and check with the manager or kitchen.
  • Verify every ingredient and preparation step, including shared equipment and surfaces.
  • Explain uncertainty clearly, and let the guest decide after hearing what the kitchen confirmed.

When a guest says they have a food allergy, thank them, ask which allergen to note, and tell them you’ll check with the manager or kitchen. Don’t guess or reassure them before the restaurant has checked ingredients and preparation. If the kitchen can’t verify or control the contact risk, explain that and help the guest consider another option.

What should a server say first?

Keep your first response calm and direct. Try:

“Thanks for telling me. What food or ingredient are you allergic to, and are there any others I should note? I’ll tell my manager and the kitchen and check the ingredients and preparation steps. I won’t guess. We’ll also check whether shared equipment or surfaces could cause contact with the allergen. If we cannot provide the information you need to decide on this dish, I’ll let you know and help you consider another option.”

Repeat the allergen back so the guest can correct you. Ask whether they have another allergy to include. If they mention a concern about cross-contact, note that too. Don’t turn the conversation into a debate about how serious the allergy is or whether a small amount matters.

A guest’s disclosure is a request for the restaurant to check the food and how it’s prepared. Food allergies occur when the body’s immune system reacts to certain proteins in food, and reactions can range from mild to severe, according to the FDA’s food allergy guidance. For more on the conversation itself, see how to handle guest allergy questions.

What should you check before answering?

Bring in the person who can verify the ingredients and kitchen procedure. If you don’t know an answer, say so and check with a manager or chef. Don’t rely on memory, a menu description, or a guess about what a supplier’s product contains.

Check every part of the order, including sauces, dressings, marinades, oils, toppings, garnishes, and packaged ingredients. A dish can have an ingredient that isn’t obvious from its name. Ask the kitchen to check the current recipe and ingredient information for each component.

Then ask how the dish will be prepared. Could the allergen transfer from a shared fryer, grill, prep station, utensil, or surface? Cross-contact is the unintended introduction of an allergen into food. Cooking doesn’t remove the possibility of cross-contact, and wiping a utensil or using shared equipment may not be enough. See FARE’s guidance on avoiding cross-contact and this restaurant cross-contact checklist.

How should the kitchen prepare the order?

Follow your restaurant’s allergy-preparation procedure. CDC recommends using separate equipment and preparation areas when feasible. If those aren’t available, CDC advises thoroughly cleaning and sanitizing surfaces and equipment before preparing the food. Staff should use the process the restaurant has trained them to follow and communicate any limits clearly.

Don’t promise that a dish can be modified until the kitchen confirms the ingredients and steps it can control. A request to leave off a topping, for example, doesn’t answer whether the sauce, cooking oil, grill, or utensil presents a concern.

A clear handoff matters during a rush. Make sure the allergy is flagged on the ticket according to your restaurant’s process, and tell the kitchen directly if that’s part of the procedure. Follow the restaurant’s check and delivery steps so the allergy information stays with the order through the handoff. CDC recommends that restaurants have a plan for serving customers with food allergies; the exact ticket and handoff method is an operating choice for each restaurant. See CDC’s restaurant food allergy guidance.

What should you say after checking with the kitchen?

Give the guest the kitchen’s actual answer. Be specific about what was checked and what remains uncertain. For example:

“The kitchen checked the ingredients and preparation method. They can [or can’t] make this dish without intentionally adding [allergen]. The [sauce, fryer, grill, or other item] is shared, so there [is or isn't] a risk of contact with [allergen]. Would you like to order this dish, choose another, or speak with the chef?”

Use plain language. If the kitchen can’t verify an ingredient or preparation step, say what it couldn’t verify. If there’s shared equipment, name it. Don’t describe an unverified dish as free of an allergen, and don’t imply that a different dish is a better choice until its ingredients and preparation have also been checked.

The guest decides whether to order after hearing the information. FARE advises diners to ask restaurant staff about ingredients and preparation, including cross-contact, and to avoid ordering when they aren’t confident in the answer. Staff can make that conversation easier by being accurate and candid. See FARE’s dining out guidance.

What if the kitchen can’t confirm the dish?

Say that plainly. For instance: “We can’t verify the ingredients in that sauce, so I can’t recommend this dish based on your allergy. I can check another option with the kitchen, or you can speak with the chef.”

Only suggest an alternative after the kitchen checks that dish’s ingredients and preparation too. If none can be verified or prepared with the controls the guest needs, explain the limit without pressure. Don’t suggest that the guest remove an ingredient at the table or take a chance on the order.

If a guest appears to be having a severe allergic reaction, follow the restaurant’s emergency plan and call 911. Don’t delay the call while trying to determine what they ate. FARE advises using epinephrine for severe symptoms and calling 911. Follow the guest’s emergency instructions and staff training, as well as local rules and the restaurant’s procedures. Review FARE’s response guidance and symptom guidance.

How can managers make the script work on a busy shift?

Give servers a short script and a clear escalation path before service. Make sure the team knows who checks recipes, packaged ingredients, oils, and kitchen procedures. Train staff on how allergy requests are flagged and how the finished order is checked and delivered. Practice the conversation during pre-shift so a server can use it even when the restaurant’s in the weeds.

Keep recipes and supplier ingredient information current, and update the restaurant’s process when ingredients or preparation methods change. A written checklist can help the team remember sauces, garnishes, cooking oils, shared fryers, grills, and prep stations. The nine major U.S. food allergens are milk, eggs, fish, crustacean shellfish, tree nuts, peanuts, wheat, soybeans, and sesame. Guests may also report other ingredients, so ask what they’re allergic to instead of assuming the list covers every concern.

Requirements can vary by location. Check the rules that apply to your restaurant with the relevant authority, or review this restaurant allergy laws guide.

Can a menu tool help guests narrow their choices?

A menu that organizes the ingredients and shared-equipment information the restaurant provides can support a clearer conversation at the table. It doesn’t replace the guest telling staff about an allergy or staff confirming the order with the kitchen.

Can I Dine?™ offers restaurants a QR code menu with filtering based on restaurant-provided information. The service is intended to organize that information for use in the guest and staff conversation. Guests should still tell staff about restrictions, and staff should confirm every order with the kitchen.

See the restaurant allergen menu software overview or how the allergy-aware QR code menu works.

Frequently asked questions

What should a server say when a guest reports a food allergy?

Thank the guest, ask which ingredient or food they’re allergic to and whether there are others to note, then say you’ll check with the manager and kitchen. Explain that you’ll verify ingredients, preparation steps, and possible contact through shared equipment. Don’t guess or make assurances before those checks are complete.

What should restaurant staff check for a food allergy order?

Check every dish component, including sauces, garnishes, oils, toppings, and packaged ingredients. Ask the kitchen how it will prepare the order and whether a shared fryer, grill, station, utensil, or surface could transfer the allergen. Follow the restaurant’s allergy procedure and communicate any uncertainty to the guest.

What should a server do if the kitchen can’t verify a dish?

Tell the guest what the kitchen couldn’t verify and avoid recommending that dish. Offer to check another option only after the kitchen reviews that option’s ingredients and preparation too. If the restaurant can’t confirm any suitable choice, explain the limitation clearly and let the guest decide what to do.

What should restaurant staff do during a serious allergic reaction?

Follow the restaurant’s emergency plan and call 911. Don’t wait to identify the food before calling. FARE advises using epinephrine for severe symptoms and calling 911. Follow the guest’s emergency instructions and staff training, as well as local rules and the restaurant’s procedures.

Does an allergy-aware menu replace talking to the kitchen?

No. A menu can organize information the restaurant provides, such as ingredients and shared-equipment notes, to support the conversation. Guests should tell staff about their allergies, and staff should confirm each order with the kitchen.

Sources

  1. Food Allergies
  2. The FASTER Act: Sesame Is the Ninth Major Food Allergen
  3. Food Code 2022
  4. Food Allergy Reactions
  5. Avoiding Cross-Contact
  6. Dining Out
  7. Recognizing and Responding to a Reaction
  8. Recognizing and Treating Reaction Symptoms

Can I Dine?™ organizes the information a restaurant provides so guests and staff can have a clearer conversation. It doesn't inspect kitchens or certify allergen-free preparation. Always tell your server about your allergies before ordering.