Nice drink, visiting bar at centre on return (6)
I believe the answer is:
nectar
'nice drink' is the definition.
(drink of the gods in Greek myth)
'visiting bar at centre on return' is the wordplay.
'visiting' indicates a hidden word (the answer 'visits' the inside of the clue).
'on return' shows that the letters should be reversed in order.
'ratcen' is hidden within 'bar at centre'.
'ratcen' back-to-front is 'NECTAR'.
(Other definitions for nectar that I've seen before include "Honey ingredient" , "Source of honey" , "Drink of the gods in Greek myth" , "Social workers collect it" , "Drink of gods and insects" .)