Different little beer for partner (5,4)
I believe the answer is:
other half
'partner' is the definition.
(I've seen this before)
'different little beer' is the wordplay.
'different' becomes 'other' (similar in meaning).
'little beer' becomes 'half' (I can't justify this - if you can you should believe this answer much more).
'other'+'half'='OTHER HALF'
'for' is the link.
Can you help me to learn more?
(Other definitions for other half that I've seen before include "partner" , "Wife or hubby" , "Dutch" , "Spouse" , "people better off than us?" .)