Every day, millions of diners scan menus looking for dishes that match their dietary needs. More guests now request gluten-free, vegan, or lactose-free options than ever before. Poor allergen tracking risks serious reactions and lost customers.
Why this matters for your restaurant's survival
One allergen mistake can be life-threatening. A guest with a nut allergy who receives traces of nuts might end up hospitalized. You can't afford that risk.
But safety's just the start. Guests with dietary restrictions represent a massive market:
- 15% of Dutch people eat vegetarian regularly
- 3% follow a gluten-free diet
- 8% have some form of lactose intolerance
- 2% eat vegan
Serve this group well, and you'll build loyalty. Mess up, and they'll never return.
The 14 mandatory allergens
European law requires restaurants to identify 14 specific allergens on menus:
📋 The 14 allergens:
- Gluten-containing cereals (wheat, rye, barley, oats)
- Crustaceans (shrimp, lobster, crab)
- Eggs
- Fish
- Peanuts
- Soy
- Milk (including lactose)
- Nuts (almonds, hazelnuts, walnuts, etc.)
- Celery
- Mustard
- Sesame seeds
- Sulfur dioxide (preservative)
- Lupine (legume)
- Mollusks (mussels, oysters, squid)
Step 1: Break down every ingredient
Start with your top 10 sellers. Examine each component and identify which allergens it contains. Hidden allergens catch most restaurants off-guard:
⚠️ Watch out for hidden allergens:
- Worcestershire sauce contains fish
- Many bouillon cubes contain celery
- Pesto often contains nuts
- Mayonnaise contains egg
- Soy sauce contains gluten (unless gluten-free)
Step 2: Build your allergen tracking system
After managing kitchen operations for nearly a decade, I've seen too many restaurants rely on guesswork. Create a detailed matrix showing all allergens for each dish. Excel works, but specialized software delivers better accuracy.
💡 Example: Pasta Carbonara
- Pasta: gluten (wheat)
- Bacon: no allergens
- Eggs: egg
- Parmesan cheese: milk
- Black pepper: no allergens
Total allergens: gluten, egg, milk
Suitable for: not vegetarian, not vegan, not gluten-free, not lactose-free
Step 3: Design clear menu symbols
Use symbols guests recognize instantly. Most diners understand these at a glance:
- 🌱 V: Vegetarian
- 🌿 VG: Vegan
- 🌾 GF: Gluten-free
- 🥛 LF: Lactose-free
- 🥜: Contains nuts
Always add this disclaimer: "Have allergies or dietary restrictions? Please ask our staff."
Stop cross-contamination cold
Your dish might be gluten-free, but if you prep it on the same board as bread, it's contaminated. Set strict kitchen protocols:
🧽 Preventing cross-contamination:
- Separate cutting boards for allergens
- Wash hands between preparations
- Use clean knives
- Prepare allergen-free products first
- Separate deep fryer for gluten-free products
⚠️ Important:
Train your entire team. One mistake can hospitalize a guest. This isn't optional.
Maintain current allergen data
Suppliers change recipes without warning. That gluten-free product from last month? It might now contain wheat. Check these regularly:
- New products from your supplier
- Recipe changes in existing products
- Seasonal ingredients
- New menu additions
Digital tracking beats paper every time
Many kitchens still use paper lists or spreadsheets. That approach creates problems:
- Hard to update quickly
- Prone to errors during changes
- Not accessible to all staff
- Time-consuming searches
Tools like KitchenNmbrs store allergen data per ingredient. Change a recipe, and allergen lists update automatically. Your team instantly sees which dishes work for specific dietary needs.
Handle uncertainty with honesty
Not 100% sure a dish is safe for someone with allergies? Be direct. Say: "I can't guarantee this dish is free from [allergen]. Let me suggest something else."
Guests respect honesty over dangerous guesses.
How do you create an allergen list? (step by step)
Inventory all your ingredients
Make a list of all ingredients you use, including spices, sauces and oils. Check per ingredient which of the 14 allergens it contains. Don't forget hidden allergens, like fish in Worcestershire sauce.
Create an overview per dish
List all allergens for each dish from all ingredients. Also note whether it's suitable for vegetarians, vegans, gluten-free or lactose-free diets. Update this immediately if you change recipes.
Train your team and prevent cross-contamination
Make sure everyone in the kitchen knows how to prevent cross-contamination. Use separate cutting boards, wash hands between preparations and prepare allergen-free dishes first. Make this part of your daily routine.
✨ Pro tip
Photograph all ingredient packaging labels within 24 hours of delivery. Store these images in a shared folder so your team can verify allergen information even after packaging gets discarded.
Calculate this yourself?
In the KitchenNmbrs app you can do this in just a few clicks. 7 days free, no credit card.
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Frequently asked questions
Do I have to list all 14 allergens on my menu?
No, you only mention allergens actually present in your dishes. But you must answer when guests ask. Keep a detailed list behind the bar for your team.
What if I'm unsure whether an ingredient contains allergens?
Check the packaging or contact your supplier immediately. If you're still uncertain, treat it as containing the allergen. Safety always trumps sales.
How do I prevent cross-contamination in a tiny kitchen?
Prep allergen-free dishes first, wash hands and equipment between tasks, use separate cutting boards. Color-coded boards help: red for meat, green for vegetables, blue for allergen-free preparations.
Do I need a dedicated fryer for gluten-free items?
Yes, if you serve gluten-free fried foods. Gluten from breadcrumbs contaminates oil permanently. Many restaurants maintain one fryer exclusively for gluten-free products or change oil more frequently.
How often should I update my allergen information?
Review supplier recipe changes monthly. Update immediately when adding new dishes or modifying existing ones. Seasonal menus need extra attention since they introduce unfamiliar ingredients.
Can guests sue me for allergic reactions?
Yes, if you're negligent about allergen information or cross-contamination. Document your safety procedures carefully. If uncertain about a dish's safety, recommend alternatives you're confident about.
📚 Sources consulted
- EU Verordening 852/2004 — Levensmiddelenhygiëne (2004) — Official source
- EU Verordening 853/2004 — Hygiënevoorschriften voor levensmiddelen van dierlijke oorsprong (2004) — Official source
- EU Verordening 1169/2011 — Voedselinformatie aan consumenten (2011) — Official source
- NVWA — Hygiënecode voor de horeca (2024) — Official source
- NVWA — Allergenen in voedsel (2024) — Official source
- Codex Alimentarius — International Food Standards (2024) — Official source
- FSA — Safer food, better business (HACCP) (2024) — Official source
- BVL — Lebensmittelhygiene (HACCP) (2024) — Official source
- Warenwetbesluit Bereiding en behandeling van levensmiddelen (2024) — Official source
- WHO — Foodborne diseases estimates (2024) — Official source
Food Standards Agency (FSA) — https://www.food.gov.uk
The HACCP standards shown in this application are for informational purposes only. KitchenNmbrs does not guarantee that displayed values are current or complete. Always consult the FSA or your local authority for the latest regulations.
Written by
Jeffrey Smit
Founder & CEO of KitchenNmbrs
Jeffrey Smit built KitchenNmbrs from 8 years of hands-on experience as kitchen manager at 1NUL8 Group in Rotterdam. His mission: give every restaurant owner control over food cost.
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