wàhn mouh chàh
雲 is clouds, 霧 is mist, and 茶 is tea, so 雲霧茶 is clouds mist tea.
Also, called by its Mandarin pronuncation yun wu, this is a green tea is named for the cloudy mountainous areas where it is grown.
green tea
dragon well tea
gunpowder tea
biluochun
genmaicha