Wine to enthuse about heartily? (6)
I believe the answer is:
graves
'wine' is the definition.
(left bank subregion of Bordeaux in France)
'enthuse about heartily?' is the wordplay.
'enthuse' becomes 'rave'.
'about' is an insertion indicator.
'heartily?' becomes 'gs' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'rave' placed inside 'gs' is 'GRAVES'.
'to' is the link.
Can you help me to learn more?
(Other definitions for graves that I've seen before include "Burial places - French wine" , "Robert - - (war poet)" , "Wine - English poet - tombs" , "French wine region" , "Table wine" .)