Cold sweets provided in police station (4)
I believe the answer is:
ices
'cold sweets' is the definition.
'ices' can be an answer for 'sweets' (ice is a kind of sweet). I am not certain of the 'cold' bit.
'in police station' is the wordplay.
'in' indicates the answer is hidden within the clue.
'ICES' can be found hidden inside 'police station'.
'provided' acts as a link.
Can you help me to learn more?
(Other definitions for ices that I've seen before include "ecorates with frosting" , "summer refreshment" , "Cold refreshments" , "Frozen sweets" , "they may be held in the summer" .)