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Geundae-doenjang-guk (근대된장국, Chard Soybean Paste Soup)

Geundae-doenjang-guk (근대된장국, Chard Soybean Paste Soup)

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A thin, mild doenjang broth carrying Swiss chard and tofu, the weeknight soup that asks for restraint: strip the tough stems, simmer the leaves briefly, and stop before the green disappears.

Soups & Stews
Korean
Weeknight
Comfort Food
Budget Friendly
15 min
Active Time
20 min cook35 min total
Yield4 servings

Geundae is best when the market leaves are firm and the ribs are slender, spring into early summer and again when autumn cools the stalls. Later in the season the center stems get tough, and then the cook has to be honest with the knife. Strip them. Keep only what will soften in the same time as the leaf.

This is not doenjang-jjigae. A jjigae is dense and forceful; this is guk (soup), thin enough to drink beside rice on a weeknight when the table needs comfort but not weight. Master Seong-nyeo had me taste the broth before the leaves went in and again after they softened. The second spoon should taste greener, not saltier. That is how you know the geundae still tastes like itself.

The work tonight is small but exact: make a clean anchovy-kelp broth, dissolve the doenjang fully, and stop cooking when the leaves slump. Too much paste makes the soup muddy, and too much heat makes the chard dull. Write the amount down when your own doenjang lands right. Memory is a borrowed bowl.

Jang (fermented soybean seasonings), the base of doenjang-guk, appears in Korean records by the Silla period; Samguk Sagi records jang among provisions for King Sinmun's marriage in 683. Geundae (leaf beet or chard) is a market green, not palace food, and geundae-doenjang-guk belongs to the everyday family of thin soybean-paste soups made with seasonal leaves such as spinach, mallow, napa leaves, and radish greens. Rice-rinsing water and anchovy broth helped a small spoonful of paste carry a rice table, which is why this mild soup stayed in home kitchens rather than formal banquet records.

The technique, the tradition, and the story behind every dish.

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Ingredients

geundae or Swiss chard

Quantity

1 bunch, about 250g before trimming

washed, tough stems stripped, leaves cut into 3-inch pieces

water

Quantity

6 cups, or 5 cups if using rice-rinsing water

second rice-rinsing water (ssalddeumul) (optional)

Quantity

1 cup

from the second rinse, replacing 1 cup water

dried kelp (dasima)

Quantity

1 piece, about 4 inches square

large dried anchovies (myeolchi)

Quantity

10

heads and guts removed

doenjang (Korean fermented soybean paste)

Quantity

3 tablespoons, plus 1 teaspoon only if needed

onion

Quantity

1/2 small (about 70g)

thinly sliced

medium-firm tofu

Quantity

150g

cut into 1/2-inch cubes

garlic

Quantity

2 cloves

minced

guk-ganjang (Korean soup soy sauce) (optional)

Quantity

1 teaspoon

for final seasoning

fine sea salt (optional)

Quantity

1/4 teaspoon, only if needed

scallions

Quantity

2

thinly sliced

green chili (optional)

Quantity

1

thinly sliced

Equipment Needed

  • Medium 3-quart pot
  • Fine-mesh strainer or deep soup ladle for dissolving doenjang
  • Large bowl for washing greens

Instructions

  1. 1

    Trim the chard

    Wash the chard in a basin of cold water, lifting the leaves out so the grit stays behind. Fold each leaf along the center rib and strip away any stem thicker than a pencil. Keep only tender stems, sliced 1/4 inch thick, and cut the leaves into 3-inch pieces. You should have about 220g trimmed greens. The measure matters because too many leaves turn a thin guk into a vegetable pot, and too few leave the broth empty.

    If your chard has wide red stems, save them for another dish or slice only the tenderest part very thin. They need more time than the leaves and can muddy this mild soup.
  2. 2

    Make the broth

    Put the 6 cups liquid, kelp, and cleaned anchovies in a medium pot. Bring it slowly to a simmer over medium heat. Pull the kelp out as soon as the water trembles and small bubbles gather at the edge, because boiled kelp turns slick and bitter. Simmer the anchovies 8 more minutes, then remove them. You want about 5 cups of clean, savory broth.

  3. 3

    Dissolve the doenjang

    Lower the heat to medium-low. Rub the doenjang through a small strainer into the broth, or mash it in a ladle with hot broth until no lumps remain. Start with 3 tablespoons. This is guk (soup), not jjigae (stew), so the broth should be savory and light enough to drink beside rice.

    Doenjang changes from jar to jar. Taste yours before it goes in, then write down whether your household paste needs the extra teaspoon. 손맛 is real; I measure it anyway.
  4. 4

    Add onion and tofu

    Add the sliced onion and any tender chard stems you kept. Simmer 2 minutes so the stems lose their raw edge. Add the tofu and garlic and simmer 3 minutes more. Tofu should warm through gently; hard boiling makes it rough and pushes the broth out of balance.

  5. 5

    Cook the leaves

    Add the chard leaves and press them under the broth. Simmer 2 to 3 minutes, just until the leaves slump and turn deeper green. Stop there. If you cook them until they collapse completely, the soup tastes dull and the chard no longer tastes like itself.

  6. 6

    Season and serve

    Taste the broth. If it needs salt, add 1 teaspoon guk-ganjang or 1/4 teaspoon fine sea salt, not another spoonful of doenjang unless the soybean flavor is weak. Stir in the scallions and the optional green chili, then turn off the heat. Serve at once with rice and kimchi. This is a soup for tonight's table, not a pot to wait an hour.

Chef Tips

  • Choose chard with lively leaves and slender ribs. If the stems are as wide as your thumb, the leaves can still be good, but the stems do not belong in this quick soup unless you slice them very thin and give them a head start.
  • Use the second rice-rinsing water, not the first. The first rinse carries dust from the rice; the second gives the broth a little body and helps the doenjang sit softly in the pot.
  • Do not make this red because you are bored. A green chili is enough if you want heat. Gochugaru can be good in many soups, but here it pulls attention from the chard.
  • For a vegetarian pot, skip the anchovies and simmer the kelp with 2 dried shiitake mushrooms for 15 minutes, removing the kelp at the first simmer. Add 1 teaspoon guk-ganjang at the end. It will taste cleaner and less deep, and that is an honest change.
  • If the market chard is leathery, cook the month you are standing in. Make spinach-doenjang-guk with tender spinach, or baechu-doenjang-guk with napa cabbage leaves instead of forcing tired greens into the bowl.

Advance Preparation

  • The anchovy-kelp broth can be made up to 3 days ahead and refrigerated, or frozen for 1 month. Bring it back to a simmer before adding the doenjang.
  • The chard can be washed, trimmed, and wrapped in a clean towel up to 1 day ahead. Cut the leaves after trimming, then keep them chilled so they do not wilt.
  • The finished soup is best fresh. Leftovers keep 2 days in the refrigerator, but reheat gently and stop as soon as the broth is hot so the greens do not darken further.

Frequently Asked Questions

Nutrition Information

1 serving (about 450g)

Calories
95 calories
Total Fat
3 g
Saturated Fat
1 g
Trans Fat
0 g
Unsaturated Fat
2 g
Cholesterol
2 mg
Sodium
970 mg
Total Carbohydrates
10 g
Dietary Fiber
2 g
Sugars
3 g
Protein
7 g

Note: Chef personas and recipes are created with AI assistance. Cook with care: follow safe food-handling practices, check doneness with a thermometer when needed, and adapt for allergies and your kitchen.

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