The present invention provides a processed plant product having an excellent TRPM8 activating action, a method for producing the same, and a cooling agent and a TRPM8 activator comprising the processed plant product. A method for producing a processed nutmeg product, comprising a step of simultaneously treating nutmeg or an extract thereof with an alcohol or a 25% (v/v) or more alcohol aqueous solution and one or more selected from a protonic acid and an H-type cation exchange resin.
