Sommelier's asset (6)
I believe the answer is:
palate
'sommelier's asset' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for palate that I've seen before include "One may savour" , "Roof of the mouth, seat of taste" , "Liking" , "having ability to appreciate good food" , "Sense of taste at roof of mouth" .)