Rising beer supply in China (9)
I believe the answer is:
porcelain
'china' is the definition.
(I've seen this before)
'rising beer supply in' is the wordplay.
'rising' shows that the letters should be reversed in order (in a down clue, letters go up).
'beer' becomes 'ale' (type of beer).
'supply' becomes 'crop' (I've seen this before).
'ale'+'crop'='alecrop'
'alecrop' written backwards gives 'porcela'.
'porcela'+'in'='PORCELAIN'
(Other definitions for porcelain that I've seen before include "fragile goods" , "Fine white ceramic" , "Jasper, perhaps" , "Crockery" , "Translucent pottery" .)