Peppermint was a type of herbal mint from Earth that could be used in various ways.
In 2372, Kasidy Yates introduced Jake Sisko to a variety of Raktajino. When dipping Makapa bread into an extra sweet Raktajino, it foamed, with the foam tasting like "a weird peppermint". (DS9: "For the Cause")
In 2376, Tuvok invented several new recipes, including Jimbalian fudge cake with peppermint coulis. (VOY: "Riddles")