Troublemaker with a coffee shop utensil (7)

I believe the answer is:

stirrer

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

I don't understand the remainder of the clue.

(Other definitions for stirrer that I've seen before include "Implement for mixing" , "Troublemaker (informal)" , "Spoon - agitator" , "One who spreads frightening or malicious rumours" , "One deliberately causing trouble" .)

I've seen this clue in The Times.

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