Bruichladdich Greener Still 15-year-old is a Scotch single malt whisky from Islay, matured in first-fill bourbon casks and bottled at 51.6% ABV. For a new drinker, that usually suggests a style led by malt sweetness, vanilla, oak, and fresh fruit rather than heavy peat smoke.
At 15 years old, it is likely to show more depth and structure than a younger whisky while still feeling bright and lively. The higher strength may make it taste more concentrated, so a small splash of water can help open it up in the glass.