Local brought in to judge stout (8)
I believe the answer is:
guinness
'stout' is the definition.
(Guinness is an example)
'local brought in to judge' is the wordplay.
'local' becomes 'inn' (local can mean someone's local pub).
'brought in to' means one lot of letters goes inside another.
'judge' becomes 'guess' (synonyms).
'inn' put inside 'guess' is 'GUINNESS'.
(Other definitions for guinness that I've seen before include "The black stuff" , "Irish stout" , "Dark drink said to be good for you" , "A bitter stout" .)