Little bit of peach in trifle (4)
I believe the answer is:
hint
'little bit' is the definition.
(I've seen this in another clue)
'of peach in trifle' is the wordplay.
'of' indicates the answer is hidden within the clue.
'HINT' is hidden within 'peach in trifle'.
(Other definitions for hint that I've seen before include "Tip, clue" , "Taste" , "Small trace; clue" , "signal" , "Helpful suggestion" .)