Piece of fudge? (3)
I believe the answer is:
fib
'piece of fudge?' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for fib that I've seen before include "One must be 20 [UNTRUE]" , "Little white lie" , "Story" , "Small lie" , "Trivial lie" .)