This mint has ginger/apple flavour and often has golden stripes/markings on its foliage. A hybrid from Mentha arvensis (Field or Corn Mint)and Mentha spicata (Spearmint).
Use for teas, iced drinks and garnishing sweet dishes.
Attractive mauve flowers in late summer.
Common name(s): Ginger Mint, Red stemmed, Golden apple, Little-leaved or Vietnamese Mint
Used for teeth whitening in the 14th century, but fell out of use, so presumably wasn't very good!
All flavoured mints smell first of mint, with the flavour being the secondary scent. The best example of this is mint chocolate, where you can taste both chocolate and mint.