Korean Green Tea & Grades (Ujeon, Sejak, Joongjak, Daejak, Yeopcha)
Do you want to learn about Korean green tea? Start from here! This is the basic guideline for the Korean green tea and tea grading system based on the current regulation by the National Agricultural Products Quality Management Service (NAQS) in South Korea.

The world of Korean tea can be confusing with different terminology, history, and custom.
Before I overwhelm you with details, I decided to prepare this basic guideline, so you can understand the basic terms and how the tea grading system works in South Korea.

The Rule of Law and Enforcement

In 2015, the NAQS introduced the first tea grading system to organise and standardize the artisan loose leaf tea market.
The regulation is controversial til today because the major tea grading system is solely based on harvesting time.
This means if you are growing tea in colder weather where tea buds come out later than the warmer region in South Korea, you might lose a chance to sell your quality tea under a certain name that consumers acknowledge and pay a premium.

Curious about the overall law and enforcement for the tea industry in South Korea? Korean Tea Industry.
Want to know about the specific law and enforcement for the tea grading system in South Korea? Korean Tea Grades.* They are all written in Korean.
The Official Korean Tea Grades


우전 Ujeon = Woojeon (雨煎)
Grade Name: Ujeon
Meaning: Before the grain rain (gogu, 穀雨).
Harvesting Time: Before Gogu (-4.19)
Harvest: First harvesting/plucking
Leaves: Two leaves and a bud
Tasting Note: A tasting evaluation is non-regulatory. I opted out the tasting notes for this post.
곡우 Gogu (穀雨)
Grade Name: Gogu
Meaning: The first spring rain
Harvesting Time: 7 days within Gogu (4.20-4.27)
Harvest: First harvesting/plucking
Leaves: Two leaves and a bud
Honestly, I’ve never heard of Gogu as a tea grading before I read the regulation.
People don’t use it except the government official who probably doesn’t drink any artisan tea.
Gogu is known as one of the seasonal days in Spring. It’s an important day for agriculture. That’s about it.


세작 Sejak (細雀)
Grade Name: Sejak
Meaning: A sparrow’s small and thin tongue
Harvesting Time: 4.28-4.30
Harvest: First or second harvesting/plucking
Leaves: Three leaves and a bud

중작 Joongjak (中雀)
Grade Name: Joongjak
Meaning: A sparrow’s medium tongue
Harvesting Time: 5.1-5.31
Harvest: First or second harvesting/plucking
Leaves: Three leaves and a bud

대작 Daejak (大雀)
Grade Name: Daejak
Meaning: A sparrow’s large tongue
Harvesting Time: After June 1
Harvest: Third-fourth harvesting/plucking
Leaves: tea leaves
The Daily Korean Tea Grades (Unofficial)

Apart from Ujeon, Sejak, Joongjak, Daejak, there are also newly created and commonly used terms.
특우전 Teuk Ujeon
Geographically, it is very rare to harvest tea leaves in South Korea before April.
However with climate changes, sometimes tea farms harvest tea buds earlier than usual. With these tea buds, tea farms make the most tender and delicate tea.
These teas are sold as Teuk Ujeon means Supreme Ujeon, a higher version of Ujeon. It generally costs $100-150 USD for 30-40g.
But that’s what tea companies say. To me, it is another bad sales tactic. If I compare Teuk Ujeon to Ujeon, I barely see a difference or no difference at least on the internet. If you tried Teuk Ujeon that is truly superior to Ujeon, please let me know.


엽차 Yeop Cha
Grade Name: Yeop Cha
Meaning: loose leaf tea
Harvesting Time: After June 1
Harvest: Fifth harvesting/plucking
Leaves: tea leaves and stems
You can easily purchase Yeop Cha from common Korean supermarkets such as Homeplus or Emart.
Since Yeop Cha is considered as the lowest tea grade that consumers don’t bother to pay a premium, I think NAQS opted out this category within the tea grading system.
For example, I purchased 150g of Yeop Cha less than 5 USD from Homeplus.
But you know what? Just because the market determines what is high and low quality doesn’t mean it carries the same value to you. I like Yeop Cha as much as Ujeon.

작설차 Jaksul Cha = 세작 Sejak
Many Korean teas are associated with a sparrow. I am not sure what’s so important about Korean tea and how it resembles a sparrow’s tongue, which is not even appealing. Anyway, Jaksul means a sparrow’s tongue. Jaksul Cha is usually equivalent to Sejak.

우전 Ujeon = 첫물차 Cheotmul Cha
Cheotmul Cha means the first flush, usually means Ujeon.
Remember in order to sell tea under the name Ujeon, a producer needs to follow the official guideline?
What happens if there is a tea farm that gets tea buds later than usual and fails to prepare tea before the deadline?
- Risk fines (under $10,000 USD) and sell tea as Ujeon anyway.
- Sell Ujeon under Cheotmulcha, which means first flush tea.
Ujeon has the highest branding power, so Cheotmulcha is sold cheaper than Ujeon. This means you can purchase tea as good as Ujeon and pay less.
Although I love bargains I don’t wanna rip off hard-working farmers. This is one of the reasons why I think the regulation needs to be changed.

For Your Information, Cha = Tea
Cha means tea in Korean. So whenever you see the word cha, you can use tea interchangeably.
- Jaksul Cha (작설차) = Jaksul tea
- Dumul Cha (두물차) = Dumul tea
- Ujeon Cha (우전차) = Ujeon tea

Lastly, Tea is cultural. Just because a certain term sounds cool, you can’t apply it everywhere.
When it comes to East Asia or any place, respecting originality is your best move, unless you have a legitimate reason.
While I am writing this post, I’ve noticed more and more tea companies in the West categorized Korean tea as sencha. Sencha is the term for Japanese tea.
If you are an avid tea drinker, you can easily notice that Korean sencha sounds as awkward as Sri Lanka Darjeeling or Yunnan FTGFOP. There is no reason to call any Korean tea as sencha unless a specific reason is backed up.

Are you considering to introduce Korean tea to the market? Please research or consult a professional before you mistakenly use a symbol or terminology.
Foreign affairs are no joke. No matter how your intention is innocent, your ignorance can put you in danger.
I hope this post helped you to understand some tea terms and the grading system for Korean tea.