MC useful in the kitchen (7)

I believe the answer is:

toaster

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'kitchen' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Perhaps you can see a link between them that I don't see?

I can't explain the remainder of the clue.

Can you help me to learn more?

(Other definitions for toaster that I've seen before include "Machine for making brown bread?" , "one that suggests health" , "Electrical kitchen appliance" , "Kitchenware" , "Best man" .)

I've seen this clue in The Daily Express.

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