🌸Spring

Soup Soy Sauce

국간장Gukganjang

Glycine max (fermented, light)

淸醬(Cheongjang) - Clear sauce — lighter in color but more concentrated in salt

Gukganjang (soup soy sauce) is the original, most traditional form of Korean soy sauce — what Koreans made for centuries before Japanese-style brewed soy sauce (yangjo-ganjang) arrived. It is lighter in color but saltier, produced as the first liquid separated from the meju-and-brine fermentation. Its name literally means 'soup soy sauce' because its primary use is seasoning clear soups without turning them dark. In the Donguibogam era, this was simply called 장유 (the liquid of jang).

Traditional Medicine

Source: Donguibogam (동의보감)

Nature (性)

Cold (寒)

Flavor (味)

salty

Target Organs (歸經)

Spleen (脾), stomach, Kidney (腎)

Benefits

digestion
Harmonizes the spleen and stomach, balances the flavors of food
비위를 고르게 하고 음식 맛을 조화롭게 한다
Source: 동의보감 [탕액편] 곡부 장조
detox
Resolves heat-toxins and cools the body
열독을 풀고 몸의 열을 내린다
Source: 동의보감 [탕액편] 곡부 장조

Key Compounds

Amino acidsOrganic acidsMelanoidins

This information is based on traditional Korean medicine texts (Donguibogam) and is for cultural reference only. It does not constitute medical advice.

Seasonal Availability

🌸SpringAvailable year-round

Produced alongside regular ganjang during the spring separation. Typically from the first pressing of the brine, making it lighter in color but saltier.

Processing Methods (법제)

Traditional first-press fermentation(전통 양조)

The lightest, saltiest fraction separated first from the meju-brine mixture, preserving a clean flavor suitable for soups without darkening them.

Consumption Tips by Health Goal

Digestion

Use sparingly in clear soups and vegetable dishes where you want salt and umami without darkening the broth.

Culinary Profile

Flavor

Intensely salty with clean umami; lighter and more straightforward than regular ganjang

Texture

Very thin, pale amber liquid

Common Uses

Clear soups (guk) to add salt without darkening the brothDelicate namul seasoningBanchan preparation where light color is desired

Western Substitutes

Light soy sauce (Chinese)Salt + small amount of regular soy sauce

Traditional Medicine

Benefits

Key Compounds

Seasonal Availability

Processing Methods (법제)

Consumption Tips by Health Goal

Culinary Profile

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