Valerie cops everyone tipping over wine (12)
I believe the answer is:
valpolicella
'wine' is the definition.
(I've seen this before)
'valerie cops everyone tipping' is the wordplay.
'valerie' becomes 'val' (I've seen this in other clues).
'cops' becomes 'police' (cops can informally mean the police).
'everyone' becomes 'all' (all people).
'tipping' says the letters should be written in reverse.
'all' in reverse letter order is 'lla'.
'val'+'police'+'lla'='VALPOLICELLA'
'over' is the link.
(Other definitions for valpolicella that I've seen before include "Dry red Italian wine" , "drink!" , "Red wine from northeast Italy" .)