What should travelers prepare when eating abroad with food allergies?

Allergy travel fails at the language barrier and the hidden ingredient, so the preparation is linguistic and legal as much as culinary. The legal layer is worth knowing because it tells you what the kitchen owes you: the EU's Food Information Regulation (1169/2011) requires declaration of 14 named allergens, including in restaurants and for non-prepacked food, since December 2014 — a right you can invoke politely anywhere in Europe. The US system (FALCPA, extended by the FASTER Act, which made sesame the ninth major allergen from January 1, 2023) centres on packaged labelling, with restaurant practice varying by state. Japan mandates labelling for eight items (walnut joined the list in 2023). Where no such regime exists, the paper in your pocket is the law: the chef card — your allergens and the cross-contact warning, translated professionally or via the allergy charities' card services (FARE and national allergy associations publish templates and translations) — shown to the server and, when possible, the cook.

The medical layer is non-negotiable and specific: allergists' guidance (AAAAI and peer bodies) is two auto-injectors, carried on the person (never in checked baggage, where cold and separation both threaten), with a written action plan; check destination rules on carrying them and on local availability, since epinephrine brands and pharmacy rules vary. The research layer finishes the system: identify the cuisine's structural dangers in advance (peanut in West African and Southeast Asian sauces, sesame across the Middle East and East Asia, tree nuts in pesto and desserts, gluten in soy sauce and beer-battered everything, shellfish in stocks and pastes from nam pla to XO), choose restaurant styles where the kitchen is visible and the menu short — the family-run, single-menu houses of the earlier answer are an allergy traveler's friends, because the cook can answer for every ingredient — and pre-translate the three sentences ("I am allergic to X", "does this contain X?", "it could make me very ill") with a human check on the translation. Travel insurance should name the allergy; the embassy list should include the nearest hospital. None of this diminishes the trip: allergic travelers eat magnificently abroad — in the places where the preparation, like the cooking, was done with care.

Cross-contact is the risk that survives translation: the shared wok oil, the fryer that does prawns and potatoes, the bakery's flour-dusted bench — the card must name it explicitly ("please cook mine in a clean pan with fresh oil"), because most kitchen cultures' allergy model is ingredient-based, not trace-based. The second hidden danger is the "safe" cuisine flip: the dish that is harmless at home is rebuilt abroad (the salad dressed with peanut oil, the soup thickened with nut paste), so the research is per-destination, never per-dish-name.

• Card, injectors, plan — Translated chef card printed twice, two auto-injectors on the person, the action plan in the phone and on paper
• Know the labelling law — EU 14, US 9, Japan 8: the regime tells you what you can ask for and expect
• Short menus, visible kitchens — Choose houses where one cook can account for every ingredient; research three safe dishes per cuisine

The 2 hard constraints are the medicine and the law, and they do not travel together. Epinephrine auto-injectors belong in the cabin rather than the hold, which puts them inside the screening rules as a declared medical necessity rather than as part of the 1 quart-size bag every passenger is allowed, and brands, doses and pharmacy rules differ by country, so a replacement bought abroad may not be the device you were trained on. Spare batteries for a cooling case fall under the same carry-on-only rule as any lithium cell, and anything rated above 100 watt-hours needs the airline's agreement before it flies. The legal layer is the other half and it is uneven: the European regime obliges restaurants to declare 14 named allergens even for food that is not prepacked, the US system centres on packaged labelling with sesame added as the 9th major allergen from 1 January 2023, and Japan mandates 8 items — so the identical question draws a legally backed answer in 1 country and a shrug in the next. Cross-contact is the risk that survives every translation, because most kitchen cultures model allergy as an ingredient rather than a trace, which is why the card has to name the shared fryer, the shared wok oil and the floured bench explicitly.

Order or print your translated chef cards this week, check your auto-injectors' expiry against the travel dates, and write the cuisine's hidden-ingredient list for your next destination.