Addressing persistent problem with temperance, drained drink again (9)
I believe the answer is:
rehydrate
'addressing persistent problem with temperance drained drink' is the definition.
I know nothing about this answer so I cannot tell whether this works.
'again' is the wordplay.
I cannot really see how this works, but
'again' could be 're' (prefix meaning 'again') and 're' is found in the answer.
The remaining letters 'hydrate' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Another definition for rehydrate that I've seen is " Add water to (a dried substance)".)