Demonstration to criticise English sweet (9)

I believe the answer is:

marchpane

'sweet' is the definition.
(marchpane is a kind of sweet)

'demonstration to criticise english' is the wordplay.
'demonstration' becomes 'march' (I've seen this before).
'to criticise' becomes 'pan' (informal term meaning to criticise heavily).
'english' becomes 'E' (abbreviation).
'march'+'pan'+'e'='MARCHPANE'

I've seen this clue in the Sydney Morning Herald.

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