Despite the name, this is not what I would call a "sherry bomb" at least not like a Macallan Cask Strength or Aberlour A'bunadah. This Ben Nevis is lighter in color and mouthfeel; not as "heavy".
On the nose, white raisins, toffee, flan syrup, tobacco leaf and almond. The palate is VERY dry. Notes of treacle, red licorice and grape skin / grape seeds.
With water, the nose is burnt sugar, caramel and dates. The palate is now sweeter; candy, chocolate, toffee with a hint of ginger in the finish.
While not a huge difference with or without water, I prefer it without water. It seems the water takes away some of the complexity that makes this whisky so special.