Korean Food and Allergens: A Safer Guide to Ingredients and Restaurant Questions

Start with the ingredients that repeat across the table

Soy sauce, fermented soybean paste, chile paste, sesame oil, sesame seeds, egg, anchovy stock, fish sauce, salted shrimp, seafood, and wheat-based noodles or batters appear in many Korean kitchens. A single meal can place several of them in sauces, broth, banchan, and the main dish. The same ingredient may be present even when it is not visible.

The U.S. FDA identifies milk, egg, fish, crustacean shellfish, tree nuts, peanuts, wheat, soybeans, and sesame as major food allergens under U.S. labeling law. Other countries define and label allergens differently. That list is a useful reminder of common risks, not a claim that a restaurant in Korea follows U.S. packaged-food rules.

Sauces and pastes can connect several allergens

Ganjang is made from soy and many commercial varieties contain wheat. Gochujang commonly contains soy and grain ingredients and may include wheat. Ssamjang blends fermented pastes and often includes sesame. A marinade can add pear, garlic, sugar, soy sauce, sesame oil, or other components. “Just grilled meat” is therefore not allergen-simple when it was marinated.

Ask to see a current product label when feasible. A familiar brand may reformulate, and a refill container at a restaurant may not identify its source. “No sesame seeds on top” does not address sesame oil in the seasoning, just as “no tofu” does not address soy sauce.

Broth and fermentation are easy to overlook

Anchovies, kelp, dried seafood, beef, pork, chicken, and shellfish can build broths. Kelp in the pot does not prove that the stock is fish-free. Kimchi may contain fish sauce or salted shrimp, and that kimchi can then season stew, fried rice, pancakes, dumplings, or noodles. A seafood allergen can travel through a dish without an obvious piece of seafood.

Ask “What is the broth made from?” and “Does the kimchi or seasoning contain fish sauce or salted shrimp?” These questions are more actionable than “Is this safe?” because the server can check a base recipe or package. For strict avoidance, also ask whether the same ladle, fryer, grill, or prep surface handles the allergen.

Shared-table and shared-kitchen risks

At barbecue, one grill may cook marinated and plain meats, seafood, mushrooms, and kimchi. Tongs can move between raw foods and cooked pieces. At a bunsik shop, one fryer may handle seafood, wheat batter, dumplings, and other snacks. Banchan may be batch-prepared, and a kitchen may not have a separate allergen-controlled station.

A request to omit an ingredient from the final plate cannot undo cross-contact earlier in preparation. Explain the severity of the allergy, not only the preference. If the restaurant cannot provide a clear answer, uncertainty itself is the answer: do not rely on visual inspection or remove the ingredient after service.

Useful Korean sentences to show staff

Keep the message short, written, and specific. “Sikpum alleoreugiga isseoyo” (식품 알레르기가 있어요) means “I have a food allergy.” Follow it with the exact ingredient in Korean and a direct statement that you cannot eat it. A translation card prepared before travel is safer than assembling a complex sentence while ordering.

Two helpful questions are “I eumsige [ingredient]i deureogayo?” (이 음식에 [ingredient]이 들어가요?)—“Does this food contain [ingredient]?”—and “Gateun joridogu-reul sayonghanayo?” (같은 조리도구를 사용하나요?)—“Do you use the same cooking utensils?” Particle forms can change with the ingredient name, so showing a professionally checked card is best for a severe allergy.

• Sesame: chamkkae (참깨); sesame oil: chamgireum (참기름).
• Soybean: daedu (대두) or kong (콩); soy sauce: ganjang (간장).
• Wheat: mil (밀); egg: gyeran (계란) or dalgyal (달걀).
• Peanut: ttangkong (땅콩); milk: uyu (우유).
• Shrimp: saeu (새우); crab: ge (게); fish: saengseon (생선).

Build a travel plan before the first meal

Carry more than one copy of an allergy card, keep prescribed emergency medication accessible, and know how to contact local emergency services according to your clinician’s travel advice. Research dedicated or well-reviewed venues, but re-confirm on arrival. Online comments and old menus cannot guarantee today’s ingredients or staff procedures.

Pack a safe backup food where travel rules allow. At shops, read the complete current label and remember that local labeling requirements differ. When risk cannot be clarified, a simple sealed product with a verified label may be a better meal than a complex restaurant dish. This guide cannot determine whether any specific food is safe for an individual.