Falsify some confectionery (5)
I believe the answer is:
fudge
This clue is a double definition.
'falsify' is the first definition.
(I know that falsify can be written as fudge)
'some confectionery' is the second definition.
(fudge is a kind of confectionery)
(Other definitions for fudge that I've seen before include "Soft buttery sweet" , "Sweet; nonsense (arch.)" , "Sweet - unsatisfactory compromise" , "Cook - candy" , "Soft sugary sweet" .)