Seaweed Soup
Cook modeLight, nourishing seaweed soup with beef — traditionally eaten on birthdays in Korea.

History & culture
Seaweed soup is eaten on birthdays and after childbirth in Korea, rooted in coastal use of miyeok and beliefs about iron-rich nourishment for new mothers. Families simmer dried seaweed with beef or anchovy broth for a mild, familiar guk. The birthday custom may remind eaters of maternal care, though exact historical timing is unclear in records. The dish is now standard in hospitals, homes, and restaurants serving postpartum meal sets.
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Ingredients & steps
Ingredients
- 100 gThinly sliced beef
Substitutesirloin or ribeye or sliced thin at home
- 20 gDried seaweed (miyeok)
Substitutewakame (soak less)
- 1 tbspNeutral cooking oil
- 4 cupsWater
Seasonings
- 2 tbspSoy sauce
SubstituteTsuyu (diluted) 4 tsp (2 tsp per 1 tbsp) or Tamari 2 tbsp
- 1 tspToasted sesame oil
Substitutea small amount of olive oil (flavor differs)
Steps
- 120 min
Soak dried seaweed in cold water for 20 minutes, then drain and cut into bite-size pieces.
- Dried seaweed (miyeok)
- 2Medium heat2 min
Briefly blanch beef in boiling water, rinse, then stir-fry in a little oil until no longer pink.
- Thinly sliced beef
- Neutral cooking oil
- 3Medium heat1 min
Add seaweed and soy sauce. Stir-fry 1 minute.
- Dried seaweed (miyeok)
- Soy sauce
- 4Low heat12 min
Pour in water, bring to a boil, then simmer on low 10 minutes. Finish with sesame oil.
- Water
- Toasted sesame oil
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Equipment
- Medium pot
- Small bowl for soaking
Storage & reheating
Refrigerate up to 2 days. Reheat gently; do not boil hard after seaweed is cooked.
Troubleshooting
⚠️ Soup tastes flat
→ Add a splash of fish sauce or a little more soy sauce, then simmer 2 minutes.
⚠️ Seaweed too chewy
→ Soak longer (30 min) or slice thinner before cooking.