Miyeokguk is a mild Korean soup made from dried brown seaweed (miyeok) soaked and simmered into a savory broth.
For 3–4 people, the working numbers are simple: 20 g of dried miyeok, 1 Tbsp sesame oil, and 1.5–2.5 L of water, simmered for at least 20–30 minutes.
This post covers the beef-broth recipe step by step, why Koreans eat seaweed soup on their birthdays, how much dried vs fresh miyeok to use, broth variations, and the soaking mistakes that ruin the texture.
Contents
- Miyeokguk recipe — beef broth method and key ratios
- Why Koreans eat seaweed soup on birthdays
- Dried vs fresh miyeok — how much to soak
- Broth choices and variations — beef, anchovy, seafood
- No-beef diner-style shortcut
- Common mistakes, storage and reheating
Miyeokguk recipe — beef broth method and key ratios
For 3–4 servings, soak 20 g of dried miyeok in cold water for 10–15 minutes, stir-fry it in 1 Tbsp sesame oil, and simmer it in 1.5–2.5 L of water for at least 20–30 minutes.
The end-to-end time runs roughly 50–60 minutes when you make the beef broth separately (10–15 min soak + 2–3 min stir-fry + 20–30 min simmer + 20–30 min broth).
- Soak 20 g of dried miyeok in cold water for 10–15 minutes, then rinse several times under running water.
- If the fishy smell bothers you, rinse once more in water with a few drops of vinegar.
- Squeeze out the water and cut the seaweed into 3–4 cm lengths — squeezing first keeps the broth clear.
- Simmer beef (brisket or shank, 100–150 g) in cold water, bring to a boil, skim the foam, and simmer 20–30 minutes.
- Shred the beef and return it to the pot with the cut seaweed.
- Stir-frying the beef in 1 Tbsp sesame oil first also works — it removes the fishy smell and adds a nutty aroma.
- Simmer on medium-low for at least 20–30 minutes; a shorter boil gives a thin, weak broth.
- Add 1 Tbsp minced garlic in the last 5 minutes, season with 1–2 Tbsp soup soy sauce and finish with salt.
One widely cited English-language recipe (Maangchi) serves 4 with 1 oz dried seaweed, 1/2 lb brisket or chuck, 2 Tbsp sesame oil, and 1 Tbsp minced garlic.
If you are short on time, stir-frying the beef in sesame oil first and skipping the separate broth keeps the nutty depth in far less time.
| Dried miyeok (before soaking) | 20 g |
|---|---|
| Soaked miyeok (after 10–15 min) | ~200 g |
| Water or broth | 1.5–2.5 L |
| Sesame oil for stir-frying | 1 Tbsp |
| Beef (brisket or shank) | 100–150 g |
| Minced garlic | 1 Tbsp (last 5 min) |
| Soup soy sauce (guk-ganjang) | 1–2 Tbsp, salt to finish |
Why Koreans eat seaweed soup on birthdays
Koreans traditionally eat miyeokguk on their birthdays as an act of gratitude toward the mother who gave birth to them.
The custom traces back to miyeok’s reputation as postpartum food: it is rich in calcium, iodine, and dietary fiber, and has long been served to new mothers for recovery.
An old Joseon-era record tells of seaweed found inside a whale that had just given birth — the origin of the belief that miyeok helps postpartum recovery.
The custom also extends to offering tables.
In Joseon-era practice, the mother’s room’s southwest corner was cleaned, and three bowls each of rice and miyeokguk were set out for Samsin, the birth grandmother deity; the mother then ate the offered food.
Miyeokguk with rice is also offered to Samsin on samchil-il (the 3rd and 7th days) and baek-il (the 100th day) after a baby’s birth.
There is a folk side to the dish too.
‘Eating miyeokguk’ is an idiom for failing an exam or being dismissed — explained either by the slippery seaweed or by the homophone of haesan (disbandment, from the 1907 army dissolution) and haesan (childbirth).
Some households skip it when a child is a high-school senior, and some restaurants do not sell it on CSAT day.
If you are cooking for a Korean friend’s birthday, this soup is the expected dish — and slipping in a light joke about exams is optional.
Dried vs fresh miyeok — how much to soak
20 g of dried miyeok serves 3–4 people and expands roughly 10x in volume once soaked.
Water goes at 1.5–2.5 L for those 3–4 servings.
Use less water and simmer longer for a thicker broth.
| Item | Amount for 3–4 people |
|---|---|
| Dried miyeok | 20 g |
| Soaked miyeok | ~200 g (about 10x expansion) |
| Water | 1.5–2.5 L |
The first thing to check is the dried-vs-soaked ratio — 20 g of dried miyeok looks tiny, but that is where first-timers most often go wrong.
Over-measuring the dried seaweed makes the soup dense with seaweed, because the expansion is so large.
Fresh (wet) miyeok can be used in place of dried, but a confirmed conversion ratio between the two did not turn up in the sources — check the package label of the fresh product you buy.
If you can only find fresh miyeok, aim for the volume the soaked amount would produce (about 200 g for 3–4 people) rather than guessing from the dried weight.
Broth choices and variations — beef, anchovy, seafood
The broth decides the character of the soup: beef is savory, anchovy-kelp is light and clean, and seafood (mussels, clams, shrimp) is briny.
Beef can be swapped for pork (milder) or chicken (lighter).
Anchovy version: simmer gizzard-removed anchovies plus kelp in water, reduce to low for 10 minutes after boiling, then remove the solids before adding the seaweed.
Simmer the anchovy-kelp broth for exactly 10 minutes after boiling — past 10 minutes the broth turns bitter.
Seafood version: degrit the shellfish fully and add a slice of ginger if the briny smell is strong.
Perilla-powder version: omit soy sauce, season with salt only (about 2 Tbsp) to keep the broth clear, and add 6 Tbsp perilla powder in stages while stirring so it does not clump.
If you want the classic hearty birthday soup, use beef; if you want something light for a weekday, the anchovy version takes less prep.
Perilla powder goes rancid quickly, so seal and refrigerate it after opening.
No-beef diner-style shortcut
You can make miyeokguk without beef in 15 minutes of simmering, using rice-washing water and pantry seasonings for the depth beef would give.
This is the style used in Korean diner (gisa-sikdang) cooking.
- Stir-fry 20 g of soaked, cut miyeok in 2 Tbsp perilla oil for 2 minutes.
- Add 1.5 L of rice-washing water — the starch adds body and a mellow depth that plain water lacks.
- Add 1 Tbsp minced garlic, 2 Tbsp soup soy sauce, 1 Tbsp anchovy fish sauce, and 1 Tbsp beef dashida.
- Simmer covered on low for 15 minutes, then adjust with 0.5 Tbsp salt.
If you do not have rice-washing water, this is the one recipe on this list where plain water will taste noticeably thinner.
If beef is expensive where you live, this shortcut reproduces the diner-style bowl at a fraction of the cost.
Common mistakes, storage and reheating
The most common mistakes are over-soaking, hot-water soaking, garlic too early, and over-seasoning with soy sauce.
Hot water breaks down the seaweed tissue and ruins the texture — soak in cool or lukewarm water only.
One variant soaks 50 g of thick-cut dried miyeok in lukewarm water for up to 30 minutes, but 10–15 minutes in cold water is the standard for regular dried miyeok.
Season slightly salty from the start, because the seaweed keeps absorbing broth as the soup cools.
Use 1–2 Tbsp of soup soy sauce, not more — too much darkens the soup and masks the seaweed’s own flavor.
Drizzle a small amount of sesame oil right before turning off the heat; too much makes the soup oily.
Leftovers keep 2–3 days refrigerated in a sealed container after cooling fully.
When reheating, add a little water if the broth has thickened, and re-season with soup soy sauce or salt.
If you have a thyroid condition or an iodine restriction, limit how much miyeokguk you eat — seaweed is high in iodine.
If I were short on time, I would stir-fry the beef in sesame oil first instead of making a separate broth — you lose almost nothing in flavor and cut 20–30 minutes of simmering off the clock.
Related posts
Sources
- Samsin offering custom, whale anecdote in Ojuyeonmunjangjeon (ko.wikipedia.org)
- 20 g dried seaweed for 3-4 servings; 1.5-2.5 L water; soak 1 (lifebase.kr)
- 2 Tbsp perilla oil + 1.5 L rice-washing water + beef dashida (wikitree.co.kr)
What to remember
- First thing to check: the dried-vs-soaked ratio. 20 g dried looks tiny but becomes about 200 g — over-measuring is the most common first-timer mistake.
- Rinse the soaked seaweed several times in running water; a splash of vinegar in the rinse water cuts the seaweed smell.
- Add the minced garlic in the last 5 minutes — early garlic loses its aroma.
- Season slightly salty from the start, and keep soup soy sauce to 1–2 Tbsp so the soup does not darken.
- The whole dish takes about 50–60 minutes with a separate beef broth, or 35–45 minutes with the stir-fry-first method.
FAQ
Q. Is fresh miyeok okay if I can’t find dried?
Fresh miyeok can be used, but a confirmed dried-to-fresh conversion ratio did not come up in this round of sources — a rough guide is the soaked volume the recipe produces, about 200 g for 3–4 people.
Q. Can I use rice-washing water instead of beef broth?
Yes — the no-beef diner-style version uses 1.5 L of rice-washing water, whose starch gives the broth body in place of beef.
Q. How long should I soak dried miyeok for miyeokguk — can I leave it overnight?
10–15 minutes in cold water is the standard; over-soaking (including overnight) makes the texture mushy. A lukewarm 30-minute soak is used only for thick-cut seaweed.
Q. My miyeokguk smells too fishy — what do I do?
Rinse the soaked seaweed several times, optionally with a few drops of vinegar in the rinse water, and stir-fry it in sesame oil or perilla oil before simmering.
Q. How much fresh miyeok equals 20 g of dried?
Dried miyeok expands about 10x when soaked, so 20 g dried equals roughly 200 g soaked — but a verified fresh-to-dried ratio is not available from the sources.
If you are cooking this for a birthday, start soaking the seaweed about an hour before the meal — the rest of the recipe fits inside that hour.
Cover photo: Dried seaweed cakes by Fumikas Sagisavas — CC0 1.0
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