con·gou 
(kŏnggō, -g)
(kŏnggō, -g)n.
A grade of Chinese black tea, obtained from the fifth and largest leaf gathered from a shoot tip of a tea plant.
[Amoy (Xiamen) kang hu (te), elaborately prepared (tea), corresponding to Mandarin gōngfu (chá), from gōngfu, worksmanship; see KUNG FU.]