Sweet nonsense (5)
I believe the answer is:
fudge
This clue is a double definition.
'sweet' is the first definition.
(I know that fudge is a sweet)
'nonsense' is the second definition.
(I've seen this in another clue)
(Other definitions for fudge that I've seen before include "Sweet - unsatisfactory compromise" , "sugar, butter and cream" , "Very sweet confection" , "Confectionery" , "Soft creamy sweet" .)