Hot Christmas cake left to be taken away (6)
I believe the answer is:
stolen
'hot' is the definition.
(I've seen this before)
'taken away' is the wordplay.
'taken' becomes 'stole' (stealing is a kind of taking).
'away' becomes 'n' (I am not sure about this - if you are sure you should believe this answer much more).
'stole'+'n'='STOLEN'
'christmas cake left to be' is the link.
This may not be correct. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for stolen that I've seen before include "Robbed" , "Taken unlawfully" , "Purloined or embezzled" , "Taken without the owner's consent" , "Snatched" .)