Best label: it enhances bottles (5)
I believe the answer is:
elite
'best' is the definition.
(elite can mean the very best of a group)
'label it enhances bottles' is the wordplay.
'bottles' says the answer is hidden in the clue (bottling is a kind of containing).
'ELITE' is hidden within 'label it enhances'.
(Other definitions for elite that I've seen before include "First-class" , "Top group f" , "Superior or favoured group of people" , "Aristocratic" , "Upper crust" .)