Perfect type of sauce? (4)

I believe the answer is:

mint

I'm a little stuck... Click here to teach me more about this clue!

'perfect' is the definition.
(similar in meaning)

I can't explain the remainder of the clue.

(Other definitions for mint that I've seen before include "Huge sum of money" , "Culinary herb" , "Herb to make money" , "Place authorised to make a country's coins" , "Make coin - herb" .)

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

Want a hint initially instead of a full solution? Install my app