Crossword Genius

Sweet, so-called character of Heidi? (5,4)

Ross

I believe the answer is:

swiss roll

'sweet' is the definition.

I cannot understand how the rest of the clue works.

(Other definitions for swiss roll that I've seen before include "Type of sponge cake" , "teatime treat?" , "Filled sponge cake" , "Cylindrical sponge cake with layers of jam" , "piece of cake?" .)

I've seen this clue in The Independent.
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