Restrict distribution of case of alcohol with good reason (8)
I believe the answer is:
rational
'with good reason' is the definition.
'restrict distribution of case of alcohol' is the wordplay.
'restrict distribution of' becomes 'ration' (to ration something is to limit its distribution).
'case of' suggests removing the centre (outsides of).
'alcohol' with its middle taken out is 'al'.
'ration'+'al'='RATIONAL'
(Other definitions for rational that I've seen before include "Sane and logical" , "Of sound mind -- not a liar (anag)" , "In accordance with logic" , "Not absurd" , "Conforming to reason" .)