It's sweet and revolutionary (9)

I believe the answer is:

garibaldi

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'revolutionary' is the definition.
(I've seen this before)

I don't understand how the rest of the clue works.

(Other definitions for garibaldi that I've seen before include "leader of nationalists" , ""Squashed fly" biscuit?" , "military commander" , "Lady's blouse" , "Italian leader; biscuit" .)

I've seen this clue in The Daily Express.

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