Chinese Food Allergens: where allergens hide and how to order safely
By the Menulta editorial team · Facts checked 15 October 2026 · Updated 15 October 2026
The short answer
Chinese food commonly contains soy and gluten (soy sauce, hoisin, black bean sauce), sesame (sesame oil and seeds), peanuts (kung pao, satay-style dishes, groundnut oil), molluscs (oyster sauce), crustaceans (prawns, dried shrimp, XO sauce), egg (egg noodles, fried rice, batters) and fish (some sauces). Shared woks and fryers make cross-contact very likely.
Allergens in Chinese cooking
Chinese restaurant cooking relies on a small set of sauces and oils used across most dishes: soy sauce, oyster sauce, hoisin, black bean sauce, sesame oil and rice wine. Most soy sauce is brewed with wheat, so soy and gluten travel together. Oyster sauce adds molluscs to dishes that contain no seafood.
Woks are used continuously at high heat and often only rinsed between dishes, so traces of peanuts, shellfish, sesame or egg can pass from one order to the next.
Common Chinese dishes and their usual allergens
Recipes vary between kitchens, so treat this as a guide to where to look, not a substitute for each restaurant's own allergen record.
| Dish | Usual allergens | Watch for |
|---|---|---|
| Kung pao chicken | Peanuts, soy, gluten, sesame | Peanuts or groundnut oil |
| Beef in oyster sauce | Molluscs, soy, gluten | Oyster sauce |
| Egg fried rice | Egg, soy, gluten, sesame | Soy sauce, sesame oil |
| Chow mein, lo mein | Gluten, egg, soy | Egg noodles |
| Sweet and sour pork | Gluten, egg | Batter; shared fryer |
| Dim sum (har gow, siu mai) | Crustaceans, gluten, soy | Prawn fillings; wheat starch wrappers |
| Prawn crackers | Crustaceans | Shared fryer |
| Peking duck | Gluten, soy, sesame | Pancakes, hoisin |
| Sesame prawn toast | Crustaceans, gluten, sesame | Fried |
Chinese allergen hot spots
Shared woks, shared fryers and shared sauces are the core risks.
- Groundnut oil used for wok cooking and frying.
- Oyster sauce in vegetable dishes.
- XO sauce and dried shrimp in seemingly plain dishes.
- Wheat in soy sauce, making gluten-free dishes difficult.
- MSG is not an EU allergen, though some guests ask about it.
Saying it in Mandarin
These simple phrases help in China and in many Chinese restaurants:
- 'Wǒ duì … guòmǐn' (我对…过敏) – I am allergic to…
- huāshēng (花生, peanuts), jiānguǒ (坚果, nuts), zhīma (芝麻, sesame)
- xiā (虾, shrimp), bèilèi (贝类, shellfish), yú (鱼, fish)
- jīdàn (鸡蛋, egg), niúnǎi (牛奶, milk), xiǎomài (小麦, wheat), dàdòu (大豆, soy)
Regional Chinese cooking
Chinese food abroad often means Cantonese dishes, with oyster sauce, dim sum and seafood, but Sichuan, Hunan, Shanghainese and northern cuisines are increasingly common. Sichuan dishes such as kung pao chicken and dan dan noodles often use peanuts, sesame paste and chilli oil. Northern cuisine relies on wheat, with dumplings, noodles and steamed buns. Shanghainese cooking uses soy sauce and sugar generously. Each style brings different allergens, so ask about the specific dish, not just 'Chinese food'.
Gluten-free Chinese food
Coeliac guests find Chinese food difficult because wheat-based soy sauce flavours most dishes. Steamed rice, plain stir-fried vegetables and steamed fish can be adapted using tamari or a certified gluten-free soy sauce, cooked in a cleaned wok. Rice noodles are gluten-free, but sauces added to them often are not.
For the kitchen
List each sauce and oil as a component with its allergens. Note the frying and wok oil type. Offer tamari or a certified gluten-free soy sauce for gluten-free dishes, cooked in a cleaned wok. Be honest about shared woks for severe allergies.
Keep a short list of dishes your kitchen can reliably make for the commonest allergies, such as steamed fish with ginger and spring onion cooked with tamari in a cleaned wok, so staff can offer safe options quickly instead of improvising during a busy service. Train wok cooks to clean the wok thoroughly with water and detergent, not just a rinse, before allergy orders.
For guests with allergies
Ask which oil is used, whether dishes contain oyster sauce or dried shrimp, whether the wok is cleaned for allergy orders, and whether gluten-free soy sauce is available. Guests with severe peanut or shellfish allergies should discuss cross-contact before ordering.
Sources
- Regulation (EU) No 1169/2011, Annex II (EUR-Lex)
- UK Food Standards Agency: Allergen guidance for food businesses
This guide is general information, not medical or legal advice. Guests with an allergy should follow their doctor's advice. Operators should confirm their own setup with their food safety adviser or local authority.