green tea field in jeju, korea

agriculture asia bancha banyacha biluochun black cha china chun daejak field freshness garden garucha genmaicha green gunpowder gyokuro healthy herb houkui huangshan hōjicha ipcha island japan jeju jungjak jungnocha kabusecha korea kukicha leaf leaves longjing lücha maofeng maojian matcha mee melon mint oolong plant plantation seed sejak sencha shincha south taiping tea ujeon xinyang