Party’s set up something to eat (4)

I believe the answer is:

spud

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'something to eat' is the definition.
(spud is a kind of food)

I don't understand the rest of the clue.

(Other definitions for spud that I've seen before include "The popular potato" , "Weeding spade" , "Murphy" , "Vegetable" , "Commoner's King Edward?" .)

I've seen this clue in The Times.

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