(Mentha piperita 'Chocolate') While the leaves of chocolate mint have a "peppermint patty" scent, the flavor is that of a traditional mint. Chocolate colored stems contrast nicely with the deep green leaves, making it more ornamental than typical mints. Use in teas, in baked goods, or as a garnish. This aggressive spreader can be invasive, so it is probably best to grow it in pots. Perennial.