Hardened sap to offend another time? (5)
I believe the answer is:
resin
'hardened sap' is the definition.
'resin' can be an answer for 'sap' (I've seen this before). I am not certain of the 'hardened' bit.
'offend another time?' is the wordplay.
I cannot quite understand how this works, but
'offend' could be 'sin' (sin can mean to commit an offence) and 'sin' is present in the answer.
'another' could be 're' (I've seen this in other clues) and 're' is found in the answer.
No letters remain.
This explanation may well be incorrect...
'to' acts as a link.
Can you help me to learn more?
(Other definitions for resin that I've seen before include "Unprocessed pine secretion" , "stuff that's sticky" , "Tree gum" , "plant extract" , "Risen (anag.)" .)