SMWS 149.21 Machair medley is a single malt Scotch whisky bottled by the Scotch Malt Whisky Society. At 9 years old, it is likely to show a relatively youthful style, with clear distillery character and an emphasis on freshness and energy.
As an SMWS release, it is an individual cask bottling rather than a standard distillery expression. That usually means a more distinctive, small-batch experience for drinkers who want to explore how one cask can shape a whisky's character.