Another way is to grow mint in pots, right at your back door, so it will be to your hand whenever you need it.
If you choose to grow mint directly in the soil in your garden, keep it under control by lifting and dividing it before it become too large and takes over your garden. Make sure you remove as much as possible of the roots that are spreading out from the plant, because if they are left in the soil they will continue to grow. New small divisions can be replanted in the same place or elsewhere in the garden.
Mint can be propagate by stem tip cuttings in spring or summer, by division in spring or autumn, or by sowing seeds in spring.
Harvest mint by picking leaves before the plant flower and dry or freeze them for later use.