Popular custom, British into beer: fine for residents! (11)
I believe the answer is:
inhabitable
'fine for residents' is the definition.
Both the definition and answer are adjectives. Perhaps there's a link between them I don't understand?
'popular custom british into beer' is the wordplay.
'popular' becomes 'in' ('in' can mean trendy).
'custom' becomes 'habit' (habit is a kind of custom).
'british' becomes 'b' (abbreviation e.g. in BBC).
'into' is an insertion indicator.
'beer' becomes 'ale' (type of beer).
'b' going within 'ale' is 'able'.
'in'+'habit'+'able'='INHABITABLE'
Can you help me to learn more?
(Other definitions for inhabitable that I've seen before include "monastery should be so" , "Such as may be lived in" .)