Eating out with a sulphite sensitivity

Sulphites are a preservative rather than a food, so avoiding them in a restaurant means asking about wine, dried fruit, pre-cut potatoes, vinegar and processed meat — the places where a kitchen buys the ingredient already treated.

Last updated:

What EU labelling covers

Annex II of EU Regulation 1169/2011 lists "Sulphur dioxide and sulphites at concentrations above 10 mg/kg or 10 mg/litre" among the 14 allergens that must always be declared. Any business selling food in the EU — including restaurants selling food loose and unpackaged — must be able to tell you whether this allergen is an ingredient in what it serves. That duty covers declared ingredients only, not cross-contact.

Hidden sources of sulphites

Where it appears without being named in the dish description.

  • Wine, cider, beer and some fruit juices and cordials.
  • Dried fruit — apricots, sultanas and mango in particular.
  • Pre-cut, frozen and dehydrated potato products used for chips and hash.
  • Vinegar, pickles, condiments and bottled lemon or lime juice.
  • Processed and cured meats, sausages and burgers.
  • Prawns and some seafood, which may be treated on the boat to prevent discolouration.

How it reaches a dish that does not contain it

Cross-contact is a kitchen-process problem, not a recipe problem, so these are the questions a recipe cannot answer.

  • Cross-contact is less relevant here than dose — the concern is how much sulphite a dish carries in total.
  • Shared fryers using pre-treated potato products.
  • Wine used generously in a pan sauce or stew.
  • Bar equipment where cordials and mixers are dispensed.
  • Salad bars using sulphite dips to keep cut fruit and vegetables from browning.

What to ask restaurant staff

Specific questions get specific answers. Asking whether a dish is safe usually does not.

  • Are the chips or potatoes fresh, or a pre-prepared product?
  • Is wine used in this sauce or stew?
  • Is the meat cured or pre-seasoned?
  • Are any dried fruits or bottled juices used in this dish?

Dishes that often contain sulphites

Patterns worth checking, not a list of dishes to rule out.

  • Wine, cider and many bar drinks
  • Pre-prepared chips and potato products
  • Cured meats, sausages and burgers
  • Dried fruit, chutneys and pickles
  • Prawns and some frozen seafood

Dishes that often work

These are starting points to discuss with the kitchen. No dish is safe by category — every one of them depends on that kitchen's ingredients and equipment.

  • Freshly prepared vegetables, rice and pasta
  • Fresh fish and unprocessed meat cooked simply
  • Dishes seasoned with fresh citrus rather than bottled juice
  • Kitchens that peel and cut their own potatoes

Common questions

Is sulphite sensitivity an allergy?

Usually not in the IgE sense. Most reactions are irritant or intolerance responses rather than classic allergy, but they can still be severe — particularly bronchospasm in people with asthma, which is why sulphites are on the EU declarable list.

What does the 10 mg/kg threshold mean?

EU Regulation 1169/2011 requires sulphur dioxide and sulphites to be declared when present above 10 mg/kg or 10 mg/litre in the food as sold. Below that, no declaration is required, so a trace level may be present and unlisted.

Are 'sulphite-free' wines really sulphite-free?

Rarely. Fermentation produces some sulphite naturally, so most such wines are low-sulphite rather than free of it. Wines labelled 'contains sulphites' are simply above the declaration threshold.

Who is most at risk?

People with asthma, especially steroid-dependent asthma, are the group most consistently reported to react. If that is you, carrying your reliever inhaler when eating out is the standard clinical advice.

Advisory, not medical advice

MealSafe is a planning aid, not medical advice. AI-generated assessments can be incomplete or wrong, and ingredients and kitchen routines change without notice. Always confirm with the kitchen, the producer or the label before you eat, and follow the advice of your own clinician.