Teas / green / Boseong Sejak ("Thin Sparrow")

Boseong Sejak ("Thin Sparrow")
🇰🇷 South Korea

Boseong Sejak ("Thin Sparrow")

보성 세작 · 寶城 細雀

pan-fired

Boseong Sejak is Korea's commodity-grade premium green tea, plucked at the second of the four "sparrow" grades (Ujeon → Sejak → Jungjak → Daejak) in early spring after Gogu (Grain Rain). Most Boseong production uses the Yabukita cultivar introduced during the 1939 Japanese colonial plantation establishment; the misty mountain conditions (a national landmark of terraced farms) favour both first-flush sejak and later-flush jungjak/daejak. Korean deokkeum-cha processing — pan-firing in a cast-iron cauldron — gives Boseong sejak a slightly more roast-tinged profile than Japanese sencha from the same Yabukita.

Quick facts

Region
Boseong
Harvest year
2025
Harvest season
early-spring
Cultivars
Yabukita

Brewing

Leaf
3.0 g / 100 ml
Water
75°C
Rinse
no
Gongfu steeps (s)
40, 30, 45, 60
Western (min)
1.5

Boseong sejak is denser-bodied than Hadong ujeon (Yabukita cultivar vs. heirloom Hadong) and tolerates a touch hotter water. The classic Korean small-pot multiple-steep approach.

Calculate leaf weight for this tea

Tasting notes

Aroma
fresh grass, sweet hay, light chestnut
Flavor
light umami, sweet vegetal, soft
Mouthfeel
silky, smooth
Finish
clean, gently sweet

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