Introduction

Jang-kalguksu (장칼국수) is a spicy knife-cut noodle soup from Gangwon Province, especially the coastal city of Gangneung. “Jang” refers to the fermented pastes – gochujang and doenjang – that are dissolved into an anchovy broth, turning the mild, clear soup of classic kalguksu into a rich, red, warming bowl. This post explains the seasoning base and how to make it at home.

Jang-kalguksu Seasoning at a Glance

What it is

• A gochujang-doenjang seasoning for spicy kalguksu broth

Main ingredients

• Gochujang, doenjang, gochugaru, garlic, soup soy sauce, anchovy-kelp broth

Taste

• Spicy, savory and earthy, with a thick, starchy broth

Main uses

• Jang-kalguksu, jang-sujebi, spicy clam or seafood noodle soups

What is Jang-kalguksu Seasoning Made Of?

The broth starts as a simple anchovy-kelp stock. Gochujang gives heat and sweetness, doenjang adds deep savory flavor, and a little gochugaru and garlic sharpen it. Because the noodles cook directly in the broth, their starch thickens the soup. Regional and home styles:

• Gangneung style: more gochujang, sometimes with potato and zucchini, topped with egg and gim.
• Doenjang-heavy style: earthier, less sweet, closer to a spicy doenjang soup.
• Seafood style: with clams, mussels or squid.
• Meat style: ground pork or beef browned before adding the broth.

What Does Jang-kalguksu Taste Like?

It is hearty and comforting: spicy and slightly sweet from gochujang, savory and nutty from doenjang, and full-bodied thanks to the noodle starch. The chewy, flat noodles soak up the red broth, while egg ribbons and zucchini soften the heat.

Popular Korean Dishes That Use Jang-kalguksu Seasoning

Jang-kalguksu

The signature Gangwon noodle soup. Recipe below.

Jang-sujebi

The same broth with hand-torn dough flakes; see our sujebi guide.

Jang-kal-sujebi (Kal-je)

A half-and-half bowl with both noodles and dough flakes.

Easy Jang-kalguksu Recipe (Serves 2)

Ingredients

• 14 oz (400 g) fresh kalguksu noodles (or 7 oz / 200 g dried)
• 5 cups (1.2 liters) anchovy-kelp broth
• 1 small potato, thinly sliced
• 1/2 Korean zucchini, julienned, and 1/4 onion, sliced
• 1 egg, beaten; 1 scallion, sliced; crushed roasted gim for topping

Jang-kalguksu seasoning

• 2 tbsp gochujang
• 1 tbsp doenjang
• 1 tsp gochugaru (more for extra heat)
• 1 tbsp minced garlic
• 1 tsp soup soy sauce (guk-ganjang), plus salt to taste

Instructions

1. Bring the broth to a boil in a large pot. Put the gochujang and doenjang in a strainer or ladle and dissolve them into the broth to avoid lumps.
2. Add the gochugaru, garlic and potato and simmer for 5 minutes, until the potato is almost tender.
3. Shake excess flour off the fresh noodles and add them to the pot with the onion. Stir so they don’t stick and simmer for 4–5 minutes (follow the package for dried noodles).
4. Add the zucchini and cook 1 minute. Season with soup soy sauce and salt.
5. Drizzle in the beaten egg, wait 20 seconds, then stir gently. Serve topped with scallion and gim.

Tip: Fresh noodles are dusted with flour, which thickens the broth – that’s part of the style. If you prefer a lighter soup, rinse them briefly before adding.

Where to Buy Jang-kalguksu Ingredients

United States

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Amazon
Search kalguksu noodles on Amazon
Search gochujang on Amazon
Search doenjang on Amazon

H-Mart
Search kalguksu on H-Mart

Canada

Search kalguksu noodles on Amazon.ca

Europe

Search kalguksu noodles on Amazon.co.uk

How to Store Jang-kalguksu

Pre-mix the seasoning paste and keep it in a sealed container in the fridge for up to 2 weeks. The broth (without noodles) can be refrigerated for 3 days or frozen for a month. Noodles soak up broth quickly, so cook them fresh each time; opened gochujang and doenjang belong in the fridge.

Jang-kalguksu FAQ

What does “jang” mean in jang-kalguksu?

It refers to Korean fermented pastes – here gochujang and doenjang – used to season the broth.

Is jang-kalguksu very spicy?

It is medium-spicy. Reduce the gochugaru or use more doenjang for a milder bowl.

Can I use udon or other noodles?

Yes. Fresh udon or thick wheat noodles are good substitutes for kalguksu.

Where is jang-kalguksu from?

It is a specialty of Gangwon Province, closely associated with Gangneung.

Conclusion

Jang-kalguksu seasoning shows how two Korean pantry pastes can turn a light noodle soup into a bold, warming meal. With anchovy broth, a spoon each of gochujang and doenjang, and a bag of fresh noodles, you can have a Gangwon-style bowl on the table in 20 minutes.