Faulty anagram about brandy (8)
I believe the answer is:
armagnac
'brandy' is the definition.
(Armagnac is an example)
'faulty anagram about' is the wordplay.
'faulty' is an anagram indicator.
'about' becomes 'c' (abbreviation for 'circa').
'anagram' anagrammed gives 'armagna'.
'armagna'+'c'='ARMAGNAC'
(Other definitions for armagnac that I've seen before include "Liquor" , "Variety of brandy distilled in district of Gascony SW France" , "stronger drink than ale" , "Brandy traditionally made in Aquitaine" , "Spirit" .)