Resin-flavoured wine (7)
I believe the answer is:
retsina
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">resin-flavoured wine</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for retsina that I've seen before include "Flavoured Greek white wine - nastier brand" , "Type of Greek wine" , "Greek resin-flavoured wine" , "Greek wine - nastier sort" , "Nastier (anag) - white (or rose) wine" .)