One could make the pepper pot mine (7)

I believe the answer is:

pimento

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'pepper pot mine' is the definition.
'pimento' can be an answer for 'pepper' (pimiento is a type of pepper). I'm unsure of the 'pot mine' bit.

I can't explain the remainder of the clue.

Can you help me to learn more?

(Other definitions for pimento that I've seen before include "Jamaica pepper" , "Type of pepper" , "Plant" , "Spicy berries" , "Something spicy" .)

I've seen this clue in The Globe and Mail.

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