“Plenty of drink,” the member interposed (5)
I believe the answer is:
ample
'plenty of' is the definition.
(I've seen this in another clue)
'drink the member interposed' is the wordplay.
I cannot quite see how this works, but
'member' could be 'mp' (Member of Parliament) and 'mp' is found within the answer.
'drink' could be 'ale' (type of beer) and 'ale' is present in the leftover letters.
No letters remain.
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 "Plentiful, quite enough" , "Bulky" , "No more, please!" , "Spacious" , "Fairly large" .)