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Overview

Miyeok-Guk

Miyeok Guk, Korean seaweed soup, birthday soup

This miyeok guk recipe makes the Korean seaweed soup of birthdays and quiet weeknights: dried miyeok (wakame) soaked until silky, simmered with tender beef, garlic and sesame oil, and seasoned with soy sauce. The broth stays light and clean while the seaweed turns soft and slippery, the way it should be. One serving is about 380 g.

In Korea, miyeok-guk is the soup of birthdays: children grow up eating it on their birthday, and new mothers traditionally eat it for weeks after giving birth, because seaweed has long been valued as a food that helps the body recover. Korean tradition tells that the custom began from watching whales eat seaweed after calving. Whatever its origin, the soup is now an everyday staple too — a light, cheap, nourishing bowl that any Korean home cook makes without a recipe.

Pairs well with: Serve hot with steamed rice and kimchi, with the soup as the centre of a simple Korean table.

Provenance

South Korea flag South Korea

Korean Birthday-Soup Classic

East & South Asia

Time Dedication

55m

20m prep • 35m cook

Batch Yield

4 Servings

182 kcal per serving

1 serving ≈ 380 g

Technical Skill

Intermediate

Easy (One Pot)

Meal Timing & Digestive Fit

Breakfast

Not Advised

Lunch

Hearty Midday Main

Dinner

Ideal Hearty Main

Snack & Tea

Inappropriate

Soups & Broths Occasions: Birthdays, postpartum meals, light dinners, cold days Cost: Low — about $2–3 per serving at home
A white bowl of miyeok-guk, Korean seaweed soup with beef, on a red placemat

Korean Birthday-Soup Classic

Photo: Jaydub666, CC BY 4.0, via Wikimedia Commons

The Heritage Formulary

Measured Ingredients

Estimated cost: Low — about $2–3 per serving at home (USD)

Good miyeok-guk has a clear, clean broth, silky-soft seaweed and tender beef — never cloudy, gritty or sharply salty.

Execution Methodology & Culinary Technique

Step-by-Step Cooking Guide

Active 55m
P

Prep Stage: Soak the Seaweed, Slice the Beef

20 Mins active + 30 minutes soaking • Bowl, Knife & Pot

Put the dried miyeok in a large bowl, cover with cold water and leave it for 30 minutes — it swells to about ten times its dried weight. Drain, rinse once, squeeze gently and cut into bite-size pieces. While it soaks, slice the beef thinly, mince the garlic and slice the green onion.

Maestro Tip: Do not soak the seaweed in hot water — it turns slimy instead of silky.

  1. 1

    Soak the seaweed

    30 minutes soaking Cold water, about 20°C (68°F)

    Cover the dried miyeok (30 g) with plenty of cold water and leave it for 30 minutes until fully swollen and soft. Drain, rinse once under cold water, squeeze out the excess water gently and cut the seaweed into bite-size pieces.

    If the seaweed still feels gritty, rinse it a second time — sand hides in the folds.

    Done when: Seaweed soft, slippery and about 300 g after soaking.

  2. 2

    Fry the beef and seaweed

    5 minutes Medium heat, about 180°C (350°F)

    Heat the sesame oil (15 ml) in a pot over medium heat. Add the beef (200 g) and garlic (15 g) and stir-fry for 2 minutes until the beef loses its raw colour. Add the soaked seaweed and fry for 2 more minutes, stirring so the seaweed is coated in the oil — this is what gives the soup its depth.

    Keep the heat at medium; high heat burns the garlic before the beef cooks.

    Done when: Beef browned at the edges, seaweed glossy with oil.

  3. 3

    Simmer the soup

    30 minutes Simmering, 100°C (212°F)

    Pour in the water (1200 ml), bring to a boil, then lower the heat and simmer gently for 30 minutes with the lid half on. Skim off any foam that rises. The beef should be completely tender and the broth clear and savoury.

    A gentle simmer keeps the broth clear; a hard boil clouds it.

    Done when: Beef fork-tender, broth clear, seaweed very soft.

  4. 4

    Season and finish

    5 minutes Simmering, 100°C (212°F)

    Stir in the soy sauce (30 ml) and salt (3 g), taste, and adjust — the soup should taste clean and savoury, not sharply salty. Stir in the green onion (30 g), cook for 1 more minute, then ladle into bowls and serve hot with rice.

    Season at the end: soy sauce added too early darkens the broth.

    Done when: Soup savoury and balanced, green onion just wilted.

Finishing Touches & Plating

Serve the miyeok-guk steaming hot, straight from the pot, with a bowl of rice alongside — the soup is the main event, not a side dish.

Nutritional Physiology & Benefits

Nutrition

Energy

182

kcal / serving

Protein

13g

Complete AA

Carbs

9g

Complex

Fats

11g

Healthy

Per serving (4 servings · 1 serving ≈ 380 g)
Energy182 kcal
Protein13 g
Carbohydrates9 g
Fat11 g
Fibre0.7 g
Sugar0.8 g
Sodium965 mg
Per 100g
Energy48 kcal
Protein3.5 g
Carbohydrates2.4 g
Fat2.9 g
Fibre0.2 g
Sugar0.2 g
Sodium254 mg

Nutrition values are estimated — calculated from USDA FoodData Central values for the listed ingredients.

Vitamins & minerals: Iodine and iron from the seaweed, vitamin K from the green onion, and B vitamins from the beef. Nutrition values are estimated.

Iodine from the seaweed

Seaweed is one of the richest natural sources of iodine, a mineral the thyroid needs to work normally, and a bowl of miyeok-guk carries a meaningful amount.

Lean protein from the beef

Each serving carries about 13.2 g of protein from the beef, enough to make a light soup feel like a proper meal.

Iron and calcium, lightly

The seaweed and beef together supply iron and calcium as part of a varied diet, which is part of why this soup is the traditional food for new mothers in Korea.

Food Pairings

What to Eat With

To optimize nutrient absorption and elevate the sensory depth, pair with these authentic accompaniments:

Sides

Steamed rice

Plain steamed rice is the classic partner — the mild rice balances the salty, sea-flavoured broth and turns the soup into a full meal.

Kimchi

A small dish of kimchi adds crunch, heat and acidity that cuts through the soft, slippery seaweed.

Grilled fish

A piece of simply grilled fish fits the same light, clean flavours and adds protein without weighing the meal down.

Drinks

Barley tea

Cold barley tea is the everyday Korean table drink and its toasty mildness suits the soup better than anything sweet.

Complete menu

Serve miyeok-guk with steamed rice, kimchi and a small plate of grilled fish for a complete light Korean dinner.

Digestive Guardrails

What NOT to Combine

To prevent digestive distress, sluggishness, or palate clash, avoid pairing the dish with these elements:

Eating very large amounts of seaweed daily

Seaweed is very high in iodine, and eating large amounts every day can affect thyroid function for some people. Enjoy this soup as a regular meal, not in oversized portions day after day. This is general information, not medical advice.

Serving it to someone with a seaweed or shellfish allergy without checking

Seaweed can trigger reactions in people allergic to seaweed, and it is often processed near shellfish. Ask before serving if anyone at the table has a seaweed or shellfish allergy. This is general information, not medical advice.

General information only, not medical advice — consult a doctor for personal dietary decisions.

Who Should Eat It

Who Should Eat

  • General adultsA light, balanced soup as written; one bowl with rice is a full, modest meal.
  • ChildrenChildren usually like the mild broth; cut the seaweed into small pieces and keep the soy sauce light for younger children.
  • ElderlySoft seaweed and tender beef are easy to chew, but the soup is salty — keep to one bowl and go easy on extra soy sauce.
  • Pregnant womenTraditionally eaten after giving birth in Korea, but the high iodine and sodium mean pregnant women should keep portions normal and ask their clinician if unsure.
  • Breastfeeding womenFine in a normal portion; the iodine passes into breast milk, so keep to ordinary servings rather than eating it in large amounts daily. Ask your clinician if unsure.
  • AthletesLight on calories at 182 kcal a serving, so athletes will want rice and an extra protein side alongside it.
  • Weight gainAt 182 kcal a serving this is a light meal, so add rice, an egg or extra beef to reach enough energy for gaining weight.
  • Weight lossA good weight-loss choice: low in calories, high in volume, and the seaweed and protein keep you full — watch the sodium and the rice portion.

Health Conditions — Adjust or Avoid

Conditions

  • DiabetesOnly about 9.0 g of carbohydrate per serving, so the soup itself is diabetes-friendly; the rice served with it is what needs portion control. Ask your clinician about your total meal.
  • High blood pressureAt about 965 mg of sodium per serving this is a salty soup, mostly from the soy sauce and the seaweed. Use less soy sauce and salt, and ask your clinician.
  • Kidney diseaseThe soup is moderate in protein and potassium from the seaweed, which may not fit a restricted diet. Ask your clinician or dietitian before eating it regularly.
  • GoutBeef and seaweed are low in purines compared with organ meats and anchovies, but the soup is salty. Keep portions normal and ask your clinician if you have gout.
  • Stomach issuesThe soft seaweed and light broth are usually gentle on the stomach, though the slippery texture bothers some people. Eat it warm, not piping hot. Ask your clinician if symptoms persist.
  • Cardiovascular diseaseLow in fat and calories with lean beef, so it fits a heart-friendly pattern well — the main watch point is the sodium. Ask your clinician about how often it fits your diet.
  • Fatty liverLight and low in fat as written, so it is a reasonable choice; keep the soy sauce light and skip extra sesame oil. Ask your clinician for personalised advice.
  • Food allergiesContains seaweed (and soy sauce, which contains wheat unless tamari is used). The soup is often made near shellfish, so check the seaweed source if you have a shellfish allergy. Ask your clinician if you have a food allergy.
  • Special therapeutic dietsFor a gluten-free version use tamari instead of soy sauce; for a lower-sodium version halve the soy sauce and salt. Ask your clinician or dietitian before adapting it.

If you have a medical condition, consult your doctor before changing your diet.

Storage & Use

Storage & Use

How to store
Cool quickly and store in a sealed container in the fridge.
In the fridge
Keeps 3 days in the fridge at 4°C (40°F) or below.
In the freezer
Freezes for up to 1 month, though the seaweed softens further on thawing.
How to reheat
Reheat gently on the stove until steaming and bubbling, to 74°C (165°F); do not boil hard.
Freezing recommended
Yes, up to 1 month, but best eaten fresh.
Signs it has spoiled
Sour smell, slimy surface film, or cloudy broth that was clear — discard if any appear.

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