sprig of mint
Generic leaf of peppermint or spearmint, used interchangeably in cocktails and related drink forms since the early 19th century -- or earlier, as a garnish, flavoring, or in preparation form, as a mixer. Often specified as an unquantified "sprig" of mint, a sprig being a stem of mint with 3 or more mint leaves growing out of it. Suffice to say 6 to 8 LEAVES of mint is appropriate for most drinks calling for mint sprigs or leaves (such as Juleps Mojitos) - but otherwise lacking a listed quantity. Also used as garnish.