Black Chinese tea (6)
'black chinese tea' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for bohea that I've seen before include "Type of tea" , "Low-quality black China tea" , "Variety of black China tea" , "Black Chinese tea" , "Bowl-shaped aerial" .)
(Other definitions for oolong that I've seen before include "sort of leaves" , "Chinese tea leaves - no logo (anag)" , "oriental tea" , "Kind of China tea" , "A variety of black China tea with green tea flavour" .)