From Soil to Sip: The Fascinating Journey of a Tea Leaf
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From Earth to Cup: The Journey of a Korean Tea Leaf
Harvested at dawn, fixed in a Gamasot, rolled on bamboo mats, hand-sorted: the six stages of artisanal Korean tea making in Boseong.
By Maison Boseong · Seoul, South Korea · June 2026 · 6 min read
You hold your cup in your hands, steam rising, carrying scents of hazelnut and spring greenery. But do you know the journey these leaves have taken? From the misty dawn of Boseong to your Parisian living room, each Korean tea leaf goes through six irreplaceable artisanal stages.
The Six Stages of Artisanal Production
It all begins at dawn, in the mists of Boseong. Our artisans delicately pluck only the bud and the first two leaves. This precise gesture is repeated thousands of times each harvest day. One day too late, and the delicacy of Ujeon vanishes. The harvesting window can last less than ten days for the most precious grades.
Freshly harvested leaves are spread out in the shade on bamboo mats for 1 to 2 hours. This short rest allows the leaves to lose 15 to 20% of their moisture. They become slightly pliable, easier to work with, and the heat of the Gamasot can penetrate them more uniformly during the next stage.
This is the most critical and spectacular stage. The leaves are thrown into the Gamasot (large cast-iron cauldron) heated to 200–250°C. The artisan constantly turns them with bare hands in a rapid circular motion for 3 to 5 minutes. This intense dry heat immediately stops the enzymatic oxidation of the leaves and develops the characteristic roasted hazelnut aromas of Korean green tea.
Removed from the cauldron, the still warm leaves are rolled by hand on bamboo mats. This gesture delicately breaks the plant cells to allow the essential oils to rise to the surface. The pressure of the rolling also determines the final shape of the leaf: twisted, compact, which will elegantly open during infusion, progressively releasing its aromas.
The rolled leaves are spread out in ventilated dryers at low temperature (40 to 60°C) for several hours. The residual moisture slowly evaporates, chemically stabilizing the tea. This step is crucial for preservation: improperly dried tea molds within weeks. Properly dried tea can be stored for 12 to 18 months while retaining its aromas.
The final, and not least important, step: hand sorting. Experienced artisans remove small stems, damaged leaf fragments, and any impurities. For a Grand Cru Ujeon or Sejak, this sorting can take several hours for a few hundred grams. What you receive from Maison Boseong is the result of this precise work: each leaf has been seen and approved by human hands.
« Every step is an act of patience. When you drink a tea from Maison Boseong, you are not tasting a product. You are honoring a millennia-old savoir-faire. »
Craftsmanship vs. Industrial Production
There are two ways to produce Korean green tea: artisanally, as described above, and industrially. The difference is not only in the method, it is in the final result.
Industrial production uses machines for every step: mechanized harvesting, fixation in heat tunnels, automatic rolling, conveyor drying. The leaves are processed quickly, on a large scale. The result is a homogeneous, reproducible, cheaper tea, but without the complexity and personality of artisanal teas.
Artisanal production with the Gamasot cannot be mechanized. Turning the leaves with bare hands, the artisan's judgment of the leaves' color and aroma at every moment, the decision to proceed to rolling or continue the fire: these variables cannot be coded into a machine. This is why each batch of artisanal tea is slightly unique.
The Kujung-Kupo: The Nine-Fire Technique
For exceptional teas, master artisans from Boseong and Hadong practice the Kujung-Kupo (구증구포), the "nine firings, nine dryings" technique. The leaves alternately pass through the Gamasot and onto the rolling mat up to nine times.
Each firing lasts 3 to 5 minutes, followed by 5 to 10 minutes of rolling. The entire process can extend over a whole day for a few kilograms of tea. The benefits are considerable: complete elimination of residual moisture, progressive development of roasted chestnut and toasted cereal notes, and a leaf structure that allows 6 to 9 successive infusions.
To understand the details of this technique, consult our dedicated article: The Gamasot: Where Fire Meets Leaf.
Storage and Packaging
The artisan's work would be spoiled by improper storage. Korean green tea is particularly sensitive to four enemies: humidity, heat, light, and foreign odors.
At Maison Boseong, our teas are packaged in hermetic kraft pouches with a degassing valve, inside which the air has been replaced by nitrogen. This inert gas packaging preserves the aromas as if new for 12 to 18 months.
At home, store your tea in a cool, dark, and dry place, away from spices and coffee. Once opened, consume it within 3 months. Korean green tea kept too long after opening gradually loses its freshness and umami notes.
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Grand Crus All TeasAbout the author:Nico Lesage is the founder of Maison Boseong. An expert in Korean teas, he has lived in Seoul since 2011. Every year, he travels to the peninsula’s tea gardens to source exceptional harvests directly from local producers.