Serve, as coffee (4)
I believe the answer is:
pour
'serve as coffee' 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 in a stream" , "16 [CATS AND DOGS]" , "Dispense tea - rain hard" , "bucket" , "Serve liquid" .)