"Plenty of booze," the police officer put in (5)
I believe the answer is:
ample
'plenty of' is the definition.
(I've seen this in another clue)
'booze the police officer put in' is the wordplay.
I cannot quite understand how this works, but
'police' could be 'mp' (abbreviation for Military Police) and 'mp' is present in the answer.
'booze' could be 'ale' (type of alcohol) and 'ale' is found in the remaining letters.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for ample that I've seen before include "Bulky" , "Easily sufficient" , "Plenteous" , "Adequate" , "Full-figured" .)