Japanese Food Allergy Guide

日本料理 · Japan

Japanese cuisine has three invisible allergen pillars: dashi (fish stock made from dried bonito or sardines), shoyu (soy sauce containing both wheat and soy), and miso (fermented soybean paste). These appear in virtually every cooked dish and are almost never listed on menus. Japan has no legal requirement for restaurants to disclose allergens, making this one of the most difficult cuisines for allergy management.

Allergen data cross-referenced against published allergen databases.

1. Set your dietary restrictions

Unsafe dishes will be flagged and safe dishes highlighted below.

2. Hidden allergen traps in Japanese cooking

dashi

だし

Dashi is the invisible fish stock that forms the base of almost every Japanese soup, sauce, and simmered dish. Made from dried bonito flakes (katsuobushi) or dried sardines (niboshi), it is present in miso soup, ramen broth, tamagoyaki, chawanmushi, simmered vegetables, and even some pickles. It is almost never listed on menus.

soy sauce

醤油 (shoyu)

Standard Japanese soy sauce (koikuchi shoyu) is approximately 50% wheat by fermentation composition. It is present in teriyaki, yakisoba, tonkatsu sauce, ponzu, all marinades, and most brown sauces. Even tamari, which is marketed as gluten-free, may contain trace wheat. Gluten-free tamari exists but is rare in restaurants.

miso paste

味噌 (miso)

Miso is fermented soybean paste and is a primary allergen for soy-sensitive diners. Some miso varieties also contain barley or wheat. It is the base of miso soup and is also used in marinades, glazes, and dressings.

sesame oil

ごま油 (goma abura)

Sesame oil is used in almost all stir-frying and as a finishing flavor in Japanese dishes. Unlike refined sesame oil, Japanese sesame oil is typically unrefined and retains allergenic proteins. Sesame seeds are also used as garnish on nearly everything.

panko breadcrumbs

パン粉 (panko)

Panko is Japanese-style breadcrumbs made from wheat bread. Used as breading for tonkatsu, katsu curry, korokke, and all fried cutlets. Appears on dishes that seem to be 'just meat' but have a crispy wheat coating.

tempura batter

天ぷら衣 (tenpura koromo)

Tempura batter is made from wheat flour and egg. It coats all tempura items (vegetables, seafood, shrimp). The same batter fryer is used for all items in a restaurant, creating cross-contamination risks even for items ordered without batter.

These hidden allergens are in the base sauces and pastes. A real Japanese menu has dozens more dishes. Want to check them all at once?

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3. Browse 20 Japanese dishes

Ramen

ラーメン

Japanese wheat noodles served in a rich broth (soy, miso, salt, or pork bone based) topped with chashu pork, soft-boiled egg, nori, and green onions.

Contains Gluten Contains Egg Contains Fish

Sushi

寿司

Vinegared rice (shari) topped with or wrapped around raw fish, shellfish, vegetables, or egg, served with soy sauce, wasabi, and pickled ginger.

Contains Fish Contains Soy

Miso Soup

味噌汁

A traditional Japanese soup made by dissolving miso paste in dashi broth, typically containing tofu, wakame seaweed, and green onions.

Contains Fish Contains Soy Contains Vegetarian

Tempura

天ぷら

Lightly battered and deep-fried seafood or vegetables, served with a dashi-based dipping sauce (tentsuyu) and grated daikon.

Contains Gluten Contains Egg Contains Fish

Tonkatsu

豚カツ

A thick pork loin or fillet breaded with panko breadcrumbs and deep-fried, served with tonkatsu sauce, shredded cabbage, and steamed rice.

Contains Gluten Contains Egg Contains Soy

Gyoza

餃子

Pan-fried dumplings filled with ground pork, cabbage, garlic, ginger, and chives, served with a soy-vinegar dipping sauce.

Contains Gluten Contains Soy Contains Sesame

Okonomiyaki

お好み焼き

A savory Japanese pancake made from wheat flour, egg, cabbage, and various fillings such as pork belly, shrimp, or squid, topped with okonomiyaki sauce, mayonnaise, bonito flakes, and aonori.

Contains Gluten Contains Shellfish Contains Egg

Udon

うどん

Thick Japanese wheat noodles served in a light dashi-soy broth, topped with tempura, green onions, and kamaboko fish cake.

Contains Gluten Contains Fish Contains Soy

Soba

そば

Thin Japanese noodles made from buckwheat flour, served cold with a dashi-soy dipping sauce (tsuyu) or hot in a broth.

Contains Gluten Contains Fish Contains Soy

Takoyaki

たこ焼き

Round wheat flour balls filled with chopped octopus, tempura scraps, green onion, and pickled ginger, topped with takoyaki sauce, mayonnaise, bonito flakes, and aonori.

Contains Gluten Contains Shellfish Contains Egg

Yakitori

焼き鳥

Japanese grilled chicken skewers, typically seasoned with tare (soy-mirin glaze) or salt, including various cuts like thigh, breast, liver, and cartilage.

Contains Soy Contains Vegetarian

Edamame

枝豆

Young soybeans boiled or steamed in their pods, lightly salted, served as a starter or bar snack.

Contains Soy

Onigiri

おにぎり

Japanese rice balls made from cooked white rice, shaped into triangles or cylinders, often with a filling such as tuna mayo, salmon, or pickled plum, wrapped in nori.

Katsu Curry

カツカレー

Japanese curry sauce served over rice with a breaded fried cutlet (tonkatsu or chicken katsu).

Contains Gluten Contains Egg Contains Vegetarian

Tamagoyaki

卵焼き

A Japanese rolled egg omelette made by cooking thin layers of seasoned egg in a rectangular pan, often flavored with dashi, soy sauce, mirin, and sugar.

Contains Egg Contains Fish Contains Soy

Chawanmushi

茶碗蒸し

A delicate savory steamed egg custard made from eggs and dashi broth, containing shrimp, chicken, mushrooms, ginkgo nuts, and kamaboko fish cake.

Contains Tree Nut Contains Shellfish Contains Egg

Mochi

もち

Chewy Japanese rice cakes made from pounded glutinous rice, often filled with sweet red bean paste, ice cream, or flavored cream.

Teriyaki Salmon

サーモン照り焼き

Salmon fillet glazed with a sweet soy sauce-based teriyaki glaze, grilled or broiled, served with steamed rice and vegetables.

Contains Gluten Contains Fish Contains Soy

Matcha Ice Cream

抹茶アイスクリーム

Ice cream or gelato made with Japanese matcha (ceremonial or culinary grade green tea powder), typically with a dairy cream base.

Contains Dairy

Shabu-Shabu

しゃぶしゃぶ

A Japanese hot pot dish where thinly sliced meat and vegetables are briefly swished through a pot of simmering kombu dashi broth, then dipped in ponzu or sesame sauce.

Contains Gluten Contains Soy Contains Sesame

What to say at the restaurant

Show these phrases to your server. Tap to copy.

I have a food allergy

食物アレルギーがあります (shokumotsu arerugii ga arimasu)

I cannot eat [allergen]

[アレルゲン]が食べられません ([arerugen] ga taberaremasen)

Does this contain dashi or bonito?

これにだしや鰹節は入っていますか (kore ni dashi ya katsuobushi wa haitte imasu ka)

Does the soy sauce contain wheat?

醤油に小麦は含まれていますか (shouyu ni komugi wa fukumarete imasu ka)

Without soy sauce, please

醤油抜きでお願いします (shouyu nuki de onegai shimasu)

When you sit down at the restaurant, the menu will have dishes not on this list.

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Important: Dish Scout is a reference guide, not medical advice. Traditional recipes vary by restaurant, region, and chef. Always verify ingredients with restaurant staff before ordering. When in doubt, don't eat it.