Tea brought by idiot in the morning (5)
I believe the answer is:
assam
'tea' is the definition.
(I've seen this before)
'by idiot in the morning' is the wordplay.
'by' is a charade indicator (letters next to each other).
'idiot' becomes 'ass' (both can mean a stupid person).
'in the morning' becomes 'am' (short for ante meridiem - before noon).
'ass' next to 'am' is 'ASSAM'.
'brought' acts as a link.
(Other definitions for assam that I've seen before include "place associated with tea" , "Indian state famous for tea" , "Quality cuppa" , "State of NE India" , "Indian tea-producing region" .)