Dish consumed after case of Pomerol (5)
I believe the answer is:
plate
'dish' is the definition.
(plate is a kind of dish)
'consumed after case of pomerol' is the wordplay.
'consumed' becomes 'ate' (eating is a kind of consuming).
'after' is a charade indicator (letters next to each other).
'case of' means to remove the middle letters (outsides of).
'pomerol' with its centre removed is 'pl'.
'ate' put after 'pl' is 'PLATE'.
(Other definitions for plate that I've seen before include "Flower" , "serve" , "that batter will stand on" , "Illustration on special paper in a book" , "horseshoe" .)