Sweet reporter's associated with posh people (6)
I believe the answer is:
toffee
'sweet' is the definition.
(toffee is a kind of sweet)
'reporter's associated with posh people' is the wordplay.
'reporter's' shows a homophone (sound like) (report can mean to speak something aloud).
'associated with posh people' becomes 'toffy' (toff can informally mean an upper-class person).
'toffy' sounds like 'TOFFEE'.
(Other definitions for toffee that I've seen before include "Caramel" , "Sweet made with heated butter and sugar" , "Sugar/butter sweet" , "Chewy stuff" , "Confectionery made from sugar and butter" .)