Product Highlights

• Certified Organic Doenjang — Made with Korean Organic Soybeans & Sea Salt
• Naturally Pure – Free from preservatives, artificial additives, and food coloring — just traditional ingredients and time-honored fermentation.
• Traditional Jangdok Fermentation – Slowly fermented in traditional Korean jangdok earthenware jars to develop deep umami, balanced sweetness, and authentic Korean flavor.
• Available in 500g or 950g jar

[Kosrak] Organic Doenjang

Certified Organic Doenjang

Made with only two ingredients — organic Korean soybeans & sun-dried sea salt

Every batch is slowly fermented in traditional Korean jangdok jars for three years, where time transforms simple ingredients into a remarkably deep, umami-rich doenjang with balanced sweetness and a clean, authentic finish

Natural Fermentation via meju Blocks

Organic Korea-grown soybeans are carefully washed, then boiled and mashed into blocks (meju), which are left to naturally ferment and dry over several months.

During this slow fermentation, naturally occurring microorganisms break down the soybeans' proteins and starches into amino acids and other flavor compounds, creating the rich umami taste that defines traditional Korean jang.

High-quality meju, made from only soybeans and natural sea salt, is the key to producing authentic, deeply flavorful fermented pastes without artificial additives or preservatives.

A Spoonful Makes All the Difference

Just add one spoonful to get delicious doenjang — just like grandma used to make.

This doenjang is naturally fermented for 3 years in breathable Jangdok (Korean earthenware jars).

The breathable clay allows a gentle exchange of air and moisture, creating ideal conditions for beneficial microorganisms to slowly ferment and mature the paste. This patient aging process develops a deeper umami flavor, balanced heat, and a smooth, rounded finish that cannot be replicated with rapid industrial fermentation.

About the Brand

At Kosrak, "Kosrak" means striving to be the very best.

The name Gosarak comes from a Korean word meaning "the finest" or "the very best." It reflects the belief that through unwavering dedication and constant effort, we can create the very best traditional Korean fermented foods.

Fermented foods are the foundation of Korean cuisine and an essential part of every Korean table. Since our founding in 2009, we have remained committed to producing authentic fermented foods the traditional way. 

To preserve these time-honored methods, we traveled across Korea in search of traditional breathing earthenware jars and skilled artisans. Today, we care for over 5,000 traditional fermentation jars across a 30,000-pyeong (approximately 99,000 m²) fermentation site and clean forest environment.

We believe that exceptional food begins with exceptional ingredients. That's why every key ingredient—including soybeans, Korean chili peppers, rice, and onions—is sourced as certified organic, without compromise.

They also operate an on-site Korean restaurant, where their fermented products are used in everyday cooking. 

Because they cook with these ingredients daily, they have a deep understanding of their flavor, performance, and consistency—ensuring exceptional quality control from production to the table.

Full Ingredients List: Organic Korean Soybeans 90%, Korean Sea Salt 10%

Size: 500g or 950g jar

Storage: Store in refrigerator

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