Serve, as tea (4)
I believe the answer is:
pour
'serve as tea' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for pour that I've seen before include "Cause to flow or rain heavily" , "16 [CATS AND DOGS]" , "Pelt - decant" , "bucket" , "Give out liquid" .)