Peppermint is the most popular of all breath mint flavours. Peppermint is a natural hybrid of water mint (Mentha aquatica ) and spearmint (Mentha spicata ) and was first cultivated in England in the late seventeenth century. Barkleys Classic Peppermint is a strong mint with a rich refreshing peppermint flavour. Intense like any Barkleys mint.