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5 min

How do you spot dietary and allergen clues on a menu?

Learn which printed menu signals are useful and when you still need to ask the restaurant directly.

Start with the restaurant’s own legend, symbols, footnotes, and ingredient descriptions. Treat inferred dietary tags as helpful screening, not a safety guarantee, because recipes, shared equipment, and substitutions may not appear on the menu.

Printed evidence comes first

Look for a legend explaining symbols such as V, VG, GF, nuts, shellfish, or spice levels. A symbol is reliable only in the meaning the restaurant assigns to it; conventions vary between countries and restaurants. The stakes are wide: more than 33 million Americans — about one in ten adults, per Food Allergy Research & Education (FARE) — live with food allergies.[1]

Check hidden ingredients and preparation

A vegetable dish may use meat stock, fish sauce, butter, or shared frying oil. A short menu description cannot reveal every supplier or kitchen process.

  • Sauces, dressings, broths, and marinades

  • Breading and shared fryers

  • Garnishes and optional toppings

  • Possible substitutions or daily specials

Use tags to narrow, then verify

Visual menu tags can help you find likely matches quickly. If a reaction could be serious, show the restaurant a precise translated statement, ask about cross-contact, and follow the restaurant’s answer rather than an AI inference. The law is on your side in many places: EU Regulation 1169/2011 obliges restaurants to provide information on 14 listed allergens[2], while the US FDA’s nine major allergens (sesame included since 2023) cover packaged foods — restaurant menus there still require asking.[3]

Sources

  1. Food Allergy Research & Education (FARE). Food Allergy Facts and Statistics. Accessed
  2. EUR-Lex. Regulation (EU) No 1169/2011 on the provision of food information to consumers. Accessed
  3. U.S. Food and Drug Administration. Food Allergies. Accessed

AI dish images and labels are decision support only. Confirm allergies and safety-critical dietary needs with the restaurant.