It's said to be brewed for the young (5)
I believe the answer is:
brood
'the young' is the definition.
(thesaurus)
'it's said to be brewed' is the wordplay.
'it's said to be' shows a homophone (sound like).
'brewed' is a homophone of 'BROOD'.
'for' acts as a link.
(Other definitions for brood that I've seen before include "Hatch" , "Offspring" , "Family of young birds" , "Think anxiously for some time" , "Think resentfully - about young birds?" .)