Japan · Food concerns
Understand crustaceans in Japanese food, read the relevant label information and prepare specific questions before ordering.
Japan-specific editorial draft. Official sources checked 19 September 2026; independent review of the guide and catalogue connections is pending.
Understanding the local food culture
A seafood question needs a more precise follow-up. Crustaceans, molluscs and finned fish are different groups. Tell the kitchen exactly which foods you need checked, including anything used to make stock or seasoning.
Check the seasoning, filling and finishing ingredients as well as the main food.
Japan uses mandatory and recommended declarations for specified foods; the groups differ from other countries.
A product label and a restaurant conversation answer different questions.
Visible seafood is only part of the recipe. For mixed fillings, soups and fried food, ask about prepared ingredients and the cooking process. A dish without a prawn on top can still need a check of its filling, broth or shared frying oil.
Shrimp/prawn and crab have mandatory Japanese declarations. Do not treat those two names as an exhaustive statement about every crustacean species or all seafood.
Ask what the restaurant can actually check. The Consumer Affairs Agency provides separate guidance for restaurants and ready-to-eat food. Do not assume that a packaged-food label rule describes how every restaurant provides information.
Explain the ingredient and ask a member of staff who can speak with the kitchen. A friendly response is useful, but it still needs a concrete answer about the recipe and preparation. This guide does not assign one level of allergy awareness to an entire country.
Contact a restaurant while there is time to investigate. Ask about the intended order, including its sides and sauces. Find out whether components are made in advance and whether a requested change is possible.
Keep an alternative plan if the recipe or preparation cannot be established. The dish examples in this guide are starting points for questions, not a list of meals declared suitable for you.
Recognise the ingredients
Visible seafood is only part of the recipe. For mixed fillings, soups and fried food, ask about prepared ingredients and the cooking process. A dish without a prawn on top can still need a check of its filling, broth or shared frying oil.
Shrimp/prawn and crab have mandatory Japanese declarations. Do not treat those two names as an exhaustive statement about every crustacean species or all seafood.
Keep the original packaging in the conversation. Prepared sauces, powders and fillings can have several ingredients. Ask staff to check the product they use today, including changes of supplier or recipe.
Open the ingredient entries below for background and recorded names. A catalogue connection does not establish what every restaurant or brand uses.
Crab is a crustacean.
Turn a dish name into a useful question
A familiar dish name can cover several recipes. Use these recorded Japan connections to choose what to ask about, then confirm the version at the restaurant. An ingredient might be in a seasoning or filling rather than visible on the plate.
Shrimp/prawn and crab have mandatory Japanese declarations. Do not treat those two names as an exhaustive statement about every crustacean species or all seafood.
Can you check prawns, crab and the other crustaceans I avoid in the filling and stock, and whether the fryer or utensils are shared?
Ask whether the change happens before cooking. Removing a topping and changing a premade mixture are different requests. Check accompaniments, dipping sauces and the equipment used for the order.
Showing 13–23 of 23 dishes
Some seafood variations may use crustaceans.
Crustacean toppings such as shrimp may be used in nigiri variations.
Shrimp and other crustaceans are recognized optional toppings or fillings.
The seafood topping may include crustaceans such as shrimp or crab.
Some sashimi variations use raw crustaceans as the seafood component.
Some versions use shrimp or other crustacean seafood in the minced mixture.
Shrimp is a common seafood component.
Seafood fillings may include crustaceans.
Shrimp and other crustaceans are common seafood choices for tempura.
Seafood tendon commonly uses shrimp or other crustaceans as tempura.
The seafood component may be crustaceans in some teppanyaki preparations.
Labels and ingredient recognition
Use Japan’s list, not the list you know from home. The packaged-food rules identify specified foods, with mandatory and recommended declarations. Read the actual ingredient information rather than relying on a translated menu name.
This concern has mandatory declarations for the specified foods described below.
The CAA handbook shows declarations attached to individual ingredients and, in some cases, grouped together. Keep the outer packaging of multipacks: an individual inner wrapper may not repeat all of its information.
These words help identify ingredients; they are not a complete allergy card. They do not communicate severity, every food you avoid or the preparation you require. Use a checked explanation of your needs for a restaurant conversation.
| Local name | Meaning | What to check |
|---|---|---|
| えびebi | Shrimp / prawn | Mandatory declaration. |
| かにkani | Crab | Mandatory declaration. |
From the recipe to the kitchen
Knowing the ingredients is the start of the discussion. Ask how the order is made and whether the kitchen can meet your particular requirements. A dish description alone cannot answer this.
Can you check prawns, crab and the other crustaceans I avoid in the filling and stock, and whether the fryer or utensils are shared?
Shrimp/prawn and crab have mandatory Japanese declarations. Do not treat those two names as an exhaustive statement about every crustacean species or all seafood.
Find out whether stock, batter, filling or sauce has already been mixed. If it cannot be checked or changed, omitting a last-minute garnish does not resolve that question.
Ask the kitchen
Can you check prawns, crab and the other crustaceans I avoid in the filling and stock, and whether the fryer or utensils are shared?
Discuss the equipment used for this order. Shared utensils, preparation areas and serving tools need a specific answer from the kitchen. Ask about cleaning and handling rather than assuming a separate plate means separate preparation.
Describe the food you avoid explicitly. A standard checklist may cover a different set of ingredients from your own requirements.
Ask the kitchen
Can the kitchen explain how this order will be prepared and served, including any shared equipment?
Make sure the answer and the meal refer to the same order. Confirm any agreed changes with staff and check that sauces or sides have not been added automatically.
If the kitchen cannot establish an ingredient or preparation detail, retain that uncertainty rather than treating a missing warning as reassurance.
