Savoury pudding crony fails to finish? (6)

I believe the answer is:

haggis

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'savoury pudding' is the definition.
(type of Scottish dish)

I cannot understand how the rest of the clue works.

(Other definitions for haggis that I've seen before include "Dish boiled in a skin made from an animal's stomach" , "Scottish savoury combining lamb offal and oatmeal" , "Scotland's national dish" , "Scotish sheep dish" , "Scottish grub" .)

I've seen this clue in The Guardian.

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