Wikipedia Article About Crème de menthe on Wikipedia Crème de menthe is a sweet, spearmint- or peppermint-flavored liqueur. It is available commercially in a clear (called "white") and a green version (which obtains its color from the mint leaves or from the addition of coloring, if extract and not the leaves are used to make the liqueur). Both varieties have similar flavors and are interchangeable in recipes, except where the color is important.