AA Koh Chang. Likened to Hainan. Bitter, citrus (kumquat), gently madicinal, a little sharp, faintly (but hardly) sweet. Borders on "green" (crushed leaves, freshly broken, moist branches and stems) smelling without committing.
Caught wind of some not-too-sweet sugar cookies after the opening before it went "full bitter".
Additional depth, or "body", maybe "volume" to the bright, sharp, bitterness means satisfying richness, while still being dry and medicinal.
Said to be from a very old batch of wood.
VERY different than FO Koh Chang Intense.