Pass drinks hidden in middle of beer (6)
I believe the answer is:
elapse
'pass' is the definition.
(I've seen this before)
'drinks hidden in middle of beer' is the wordplay.
'drinks' becomes 'laps' (lapping is a kind of drinking).
'hidden in' indicates putting letters inside.
'middle of' means to look at the middle letters.
The centre of 'beer' is 'ee'.
'laps' placed into 'ee' is 'ELAPSE'.
(Other definitions for elapse that I've seen before include "Go past" , "run by" , "Please (anag) -- pass away" , "Tick by" , "Glide by" .)