Savor Scout › Eating out with a restriction › fish-allergy-friendly
Eating out with a fish allergy
A fish allergy is separate from a shellfish allergy, and the hard part is not the fish on the menu. It is fish as a seasoning: fish sauce, anchovies, dashi and Worcestershire sauce, in dishes that don't mention fish at all.
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Can you have shellfish if you are allergic to fish?
Fish (finned fish) and shellfish (crustaceans and molluscs) are different allergies, and many people are allergic to one but not the other. However, cross-contact in seafood restaurants is common, with shared fryers, grills and prep areas. Whether shellfish is safe for you is a question for your allergist, not a general guide.
What actually goes wrong
Fish is a hidden ingredient in a surprising number of cuisines. Fish sauce is the backbone of Thai, Vietnamese, Cambodian, Lao and Filipino cooking. Dashi, made from bonito flakes, is in most Japanese soups, sauces and even tamago. Anchovies are in Caesar dressing, puttanesca, many Italian sauces and some pizza. Worcestershire sauce contains anchovies, which matters in burgers, Bloody Marys and steak sauces.
The second risk is cross-contact. Shared fryers are the most common: a restaurant that fries fish and fries in the same oil will transfer fish protein to fries and other fried food. Grills, cutting boards and utensils in seafood-heavy kitchens carry similar risks.
Kimchi, many Korean stews and some Chinese sauces include fish or fish sauce too. If a dish has a deeply savoury, umami flavour you can't quite place, it is worth asking.
What to ask, and how
- Does this contain fish sauce, anchovy, dashi or Worcestershire? — Name them specifically. 'Does it have fish?' often gets 'no' for a dish built on fish sauce.
- Is the fryer shared with fish? — The most common cross-contact source.
- Is the Caesar dressing made with anchovies? — Almost always yes.
- Is the broth fish-based? — For Japanese, Southeast Asian and many seafood soups.
- Can this be made without fish sauce? — Some kitchens can; many curry pastes contain it already.
Which cuisines make this easier
- Easier — Mexican (outside of mariscos), Indian (North Indian especially), Middle Eastern and Levantine, Ethiopian, most steakhouses and barbecue — where fish is a separate dish rather than a seasoning. Italian, if you avoid anchovy-based sauces and ask.
- Harder — Thai, Vietnamese, Cambodian, Lao, Filipino and Korean, where fish sauce or fish-based ingredients are foundational. Japanese, where dashi is everywhere. Seafood restaurants and fish-and-chip shops, for cross-contact.
How Savor Scout helps
Savor Scout reads menus and reviews, so it can find restaurants that describe allergy accommodation, separate fryers or fish-free dishes. It cannot see fish sauce in a curry paste — the search narrows the list, and the questions above do the rest.
What this does not do. Hidden fish ingredients and shared fryers do not appear on menus. Use the search to find places worth calling, and confirm with the restaurant every time.
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Cuisines worth reading up on
Indian food, Mexican food, steak, Lebanese food
Situations where this comes up: where to eat with picky eaters, where to eat with a big group, where to take a client to dinner.