Should AI answer allergy questions on a restaurant phone? (UK)

Should an AI answer allergy questions for a restaurant?

No. An AI receptionist can take a booking and note that a guest has an allergy, but the question “is this dish safe for me?” should always be answered by a person who can check with the kitchen.

That isn't because AI is useless — it's very good at hours, directions and table bookings. It's because an allergy answer depends on things that change daily: a substituted ingredient, a new supplier, a shared fryer, a chef's special. A confident-sounding wrong answer is worse than “let me get someone to call you back”.

“Let me get someone from the kitchen to call you back” is a better answer than a confident guess.

What does the FSA say about allergen information for phone orders?

Food Standards Agency guidance says that when food is sold by distance selling — online, by phone or for takeaway — allergen information must be provided at two stages: before the purchase is completed, and when the food is delivered. Both can be in writing or orally, for example by phone.

The guidance covers the 14 allergens food businesses must declare: celery, cereals containing gluten, crustaceans, eggs, fish, lupin, milk, molluscs, mustard, peanuts, sesame, soybeans, sulphur dioxide and sulphites (above 10ppm), and tree nuts. It also encourages signage asking customers to speak to staff about allergens, and offers free allergy training for staff and managers.

The practical point for your phone line: the business is responsible for the allergen information it gives being accurate. Whoever — or whatever — answers the phone is speaking for you.

Why is it risky for AI to answer allergy questions?

Because an AI can only repeat what it has been told, and allergen information goes out of date quickly. It can also misunderstand a caller on a noisy line.

• Menus change: specials, substitutions and supplier swaps rarely make it into a written menu the same day.
• Cross-contact isn't on the menu: shared fryers, prep surfaces and oils are kitchen knowledge, not menu data.
• Mishearing: “no nuts” and “any nuts?” sound similar over a crackly mobile.
• Follow-up questions: callers ask “what about the sauce?” and “is it cooked separately?” — questions that need a chef.
• False reassurance: a fluent voice can make a guess sound certain.
• Some tools advertise that they answer dietary or allergen questions. If you use one, ask what it says, what source it uses, and whether it can be set to always hand over.

What should an AI receptionist do when a caller mentions an allergy?

It should acknowledge the allergy, avoid giving any safety answer, and make sure a person follows up quickly. It can still take the booking.

This is how Stafff handles it. It never answers allergy or dietary-safety questions. It tells the caller a member of the team will get back to them, takes their name and number, and puts the question in the “Needs reply” queue in the portal with an email alert, so someone who knows the kitchen answers. If a live transfer to a team mobile is set up, urgent calls can go straight through. Stafff doesn't take food orders or payments, so it never confirms an order as allergen-safe.

How should restaurant staff handle allergy phone calls?

Use the same five steps every time, whoever picks up. Put them on a card by the phone.

• 1. Listen and write it down: the guest's name, number, date of visit and the exact allergy in their words.
• 2. Don't answer from memory. Say: “I want to get this right — let me check with the kitchen.”
• 3. Check with the chef or duty manager, using your allergen matrix and today's specials.
• 4. Call back and be specific: which dishes are suitable, what can be adapted, and any cross-contact risk. If you can't be sure, say so.
• 5. Note it on the booking — for example “nut allergy, discussed with guest” — and brief the server on the day.

How should you record allergies on a booking?

Record only what the team needs to serve the guest safely, and delete it when you no longer need it. Information about someone's health, including an allergy, can count as special category data under UK GDPR, which calls for extra care.

A short note such as “coeliac — discussed with chef” is enough. Avoid storing medical detail you don't need, keep booking notes where only staff can see them, and include allergy notes in your normal clear-out of old bookings.

What about takeaway and delivery orders taken by phone?

For phone takeaway orders, the FSA's two-stage rule applies: allergen information before the order is completed and again when the food is delivered or collected. Many restaurants handle this by pointing callers to a written allergen menu and labelling allergen-sensitive orders.

If you use AI on the phone, the simplest safe setup is for it to share your online ordering link — where your written allergen information lives — and send any allergy questions to staff, rather than taking the order itself.