Answer allergen and menu questions automatically with a chatbot

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Introduction: “Does the soup contain gluten?”

It’s Saturday evening, the restaurant is full and the phone rings. A potential guest wants to drop by in half an hour, but has a question: “I have a gluten allergy and my partner eats vegan. What can we eat at your place?” Your staff member, who is already helping three tables at once, dives into the kitchen with slight stress to consult the chef. Sound familiar? These kinds of questions take time, interrupt service and mistakes can easily happen. What if you could answer these questions completely automatically, 24 hours a day, 7 days a week? That’s exactly where a chatbot for your restaurant menu and allergens comes in.

In my years in hospitality I’ve seen the stream of dietary requirements and allergen questions grow into a serious operational challenge. Guests are (rightly) more critical and cautious. As an owner, you want to offer them safety and clarity, but without overloading your team. Fortunately, technology offers a powerful solution. By deploying a smart AI assistant, you give guests the answer they’re looking for instantly and give your team the peace of mind to do what they do best: deliver great service to the guests already in the restaurant.

In this article we’ll dive deeper into the world of the menu chatbot. How does it work exactly? What are the pitfalls? And how does it not only improve efficiency, but also hospitality and even legal protection? Let’s begin.

The Allergen Law: A Puzzle for Every Restaurant

Before we dive into the technology, let’s take a step back. Why is this topic so important? Since the introduction of European Regulation (EU) No. 1169/2011, every hospitality business is required to inform guests about the presence of the 14 legally defined allergens. These include gluten, lactose, nuts, peanuts, shellfish and soy.

This information must be correct and easily accessible. Many restaurants solve this with a paper allergen chart or symbols on the menu. That’s a good start, but it’s often a static document. What if a recipe changes slightly? Or what if a guest has a combination of allergies? Then the manual search begins again. A chatbot for your restaurant solves exactly this problem: it provides dynamic, specific answers based on the most up-to-date data.

Koninklijke Horeca Nederland (KHN) provides extensive resources on this topic because they know how complex implementation can be in practice. Handling allergen information correctly is not an optional service, but a legal obligation and an essential part of guest safety.

How Does a Chatbot for Menu and Allergens Work?

A chatbot for your menu and allergens is an automated conversational partner on your website that is trained using your specific dishes and ingredients. Think of it as a digital employee who knows the menu and the associated allergen matrix inside out.

The process looks like this:

1. The Source of Truth: You provide a detailed overview of all your dishes, including all ingredients and the 14 legal allergens per dish. This document, often an Excel sheet or PDF, is the single source of truth for the AI.
2. Training the AI: We ‘feed’ our HorecaHub AI with this information. The AI not only learns which allergens are in which dish, but also understands the context. It can interpret questions such as "What is without cow’s milk?" (lactose) or "I’m allergic to peanuts, which desserts can I eat?".
3. Integration on Your Website: The chatbot is placed on your website as a small chat window. Guests can type their question directly without needing to call or email.

The big difference compared with a simple FAQ bot is that this AI reasons. If a guest asks about vegan options, the bot checks which dishes contain no meat, fish, dairy, eggs or honey. A menu chatbot is therefore much smarter than a list of standard answers.

Tip from practice: Make sure your allergen matrix is always up to date. If the chef decides to make a sauce with a different type of oil (for example from peanut oil to sunflower oil), this must be updated immediately in the source document. That way you guarantee the chatbot always provides the correct information.

“Can I eat this gluten-free?” – Practical Examples

Let’s make it concrete. What questions can such a chatbot answer flawlessly? Think about the daily stream of questions your staff currently handle manually.

A guest types in the chat window:

• Question: "Hi, do you also have gluten-free dishes?"
  • Chatbot Answer: "Absolutely! Our Grilled Salmon with seasonal vegetables and the Steak Tartare are completely gluten-free. With the Caesar Salad we can leave out the croutons. Please mention this again when placing your order just to be sure."
• Question: "I eat vegan. What’s on the menu for me?"
  • Chatbot Answer: "For you we have the Roasted Pumpkin Soup, the Wild Mushroom Risotto (prepared without butter or cheese) and our Homemade Falafel Burger. Enjoy!"
• Question: "Does the truffle mayonnaise contain egg?"
  • Chatbot Answer: "Yes, our homemade truffle mayonnaise is prepared with egg yolk. The fries can also be served with our vegan mayonnaise."

Imagine how much time this saves. Not only for the guest, who gets an instant answer, but especially for your team. They can spend that time giving extra attention to the guests in the restaurant. This is where technology and hospitality reinforce each other. Want to see how such a chatbot works? Check out our AI-chatbot solution.

The Benefits: Less Risk, More Service

Implementing an AI chatbot for allergen questions brings a range of benefits that go beyond convenience alone.

• Accuracy and Risk Reduction: People can make mistakes, especially under pressure. A well‑informed AI doesn’t. The chatbot provides consistent answers based on the data you provide. This minimises the risk of giving incorrect information, which is crucial both legally and for your guest’s health.
• Huge Time Savings: Do the maths. Suppose you receive five phone calls and three emails per day about the menu. If each interaction takes an average of four minutes, you already save more than half an hour per day. That’s over 3.5 hours per week of pure focus time your team gets back.
• Improved Guest Satisfaction: Guests with dietary requirements often have to make a lot of effort to get certainty. By informing them instantly and clearly 24/7, you provide exceptional service before they even step through the door. This builds trust.
• Increase in Reservations: A guest who is helped quickly and well is more likely to make a reservation. Doubt disappears. The chatbot can even send a direct link to your reservation system after answering the question.

The Crucial Role of a Disclaimer

Now an important point: the disclaimer. A chatbot is a fantastic tool, but it cannot take one crucial aspect in the kitchen into account: cross‑contamination. In a busy kitchen, a ladle used for one sauce might accidentally be used in another, or gluten‑containing crumbs might end up on a gluten‑free meal.

That’s why it’s essential that the chatbot includes a disclaimer with every answer about allergens. For example:

"Based on the recipe, this dish does not contain [allergen]. Because cross‑contamination in our kitchen can never be ruled out 100%, we kindly ask you to always inform our staff of your allergy or dietary requirement in person when placing your order."

This disclaimer is not a sign of weakness. On the contrary, it shows professionalism and a deep understanding of both hospitality practice and legal requirements. You inform the guest as completely as possible while placing the final responsibility where it belongs: in the communication between guest and service staff at the crucial moment.

Ready for the Future of Hospitality

Automatically answering questions about allergens and dietary requirements is just one of the many possibilities of AI in hospitality. This technology is not standing still. We’re already seeing that the AI assistants from HorecaHub work not only via chat on the website, but also via the phone and email. The next step is proactively making personalised recommendations.

Developments are moving incredibly fast. Want a complete overview of what’s possible and what you can expect in the coming years? Then read our comprehensive guide: The complete guide to the AI chatbot in your restaurant (2026).

Get Started with HorecaHub

After reading this article, are you convinced of the power of a chatbot for your restaurant menu and allergens? Implementing it is easier than you might think. At HorecaHub we help you from A to Z: from setting up your allergen matrix to launching the chatbot live on your website. That way you can focus on what really matters: your passion for hospitality and creating unforgettable moments for your guests.

Curious what it could mean for your business? Get in touch with us via contact with no obligation or view the prices for our different solutions. We’re happy to think along with you. '''