Rings protractedly for tea (6)
I believe the answer is:
oolong
'for tea' is the definition.
(oolong is a kind of tea)
'rings protractedly' is the wordplay.
'rings' becomes 'oo' (multiple circles).
'protractedly' becomes 'long' (I can't explain this - if you can you should believe this answer much more).
'oo'+'long'='OOLONG'
Can you help me to learn more?
(Other definitions for oolong that I've seen before include "oriental tea" , "Kind of Chinese tea" , "sort of leaves" , "Kind of China tea" , "A variety of black China tea with green tea flavour" .)