Drink search organized (6)
I believe the answer is:
chaser
'drink' is the definition.
(thesaurus)
'search organized' is the wordplay.
'organized' indicates an anagram.
'search' is an anagram of 'CHASER'.
(Other definitions for chaser that I've seen before include "A drink like beer after whisky" , "Drink following another of a different kind" , "Racing horse" , "Pursuer - of beer after whiskey?" , "One hunting" .)