Decanter for artist in bistro (6)
I believe the answer is:
carafe
'decanter' is the definition.
('carafe' can be a synonym of 'decanter')
'artist in bistro' is the wordplay.
'artist' becomes 'ra' (Royal Academician, member of Royal Academy of Arts).
'in' indicates putting letters inside.
'bistro' becomes 'cafe'.
'ra' going within 'cafe' is 'CARAFE'.
'for' acts as a link.
(Other definitions for carafe that I've seen before include "Serving vessel for water or wine" , "Decanter" , "Wide-necked bottle for water or wine" , "Wine-flask" , "Open-topped container for wine or water" .)