Eastern French region (6)
I believe the answer is:
alsace
'eastern french region' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for alsace that I've seen before include "Riesling-producing region eastern France" , "Filled pastry" , "Region in France, occasionally German" , "French region bordering Germany and Switzerland" , "Region of northeastern France famous for its wines" .)