Artist taking one old judge for a wine (5)
I believe the answer is:
rioja
'wine' is the definition.
(Rioja is an example)
'artist taking one old judge' is the wordplay.
'artist' becomes 'RA' (Royal Academician, member of Royal Academy of Arts).
'taking' is an insertion indicator.
'one' becomes 'i' (Roman numeral).
'old' becomes 'o' (abbreviation).
'judge' becomes 'J' (abbreviation for judge).
'i'+'o'+'j'='ioj'
'ra' enclosing 'ioj' is 'RIOJA'.
'for a' is the link.
(Other definitions for rioja that I've seen before include "Wine from northern Spain" , "Spanish drink" , "Popular Spanish wine" , "Spanish wine variety" , "North Spanish wine" .)