The Singleton launches four travel-exclusive scotch whiskies at Changi Airport

Here's the low-down on each of the four "Gardens of Abundance" bottles:

Radiant Spring Garden ($91.80)

The lightest scotch in the collection, both in terms of colour and flavour, Radiant Spring Garden is matured in white oak casks. It's fresh and bright, with notes of green apple, apricots and citrus.

Golden Autumn Orchard ($133.60)

See also: Cellar masters

Ex-bourbon and American white oak casks are used to age Golden Autumn Orchard. As its name suggests, toffee apples and butterscotch are front and centre in this bottle, along with poached pears and vanilla.

Exotic Spice Grove ($243)

We then go up to three casks with Exotic Spice Grove, which spends time in ex-wine, rejuvenated and reserve oak casks. The result is lightly spicy, with notes of honey, figs, berries, nutmeg and cinnamon.

See also: On the grapevine

Deep Forest Riches ($378)

The lushes flavour of the lot, Deep Forest Riches is matured in European oak, palo cortado, marsala and pedro ximénez or oloroso seasoned casks. It's deep and chocolatey with dried fruit notes.