The aroma is typical sherry cask - the caramel, vanilla, stewed fruit, molasses, muscovado, there's also chocolate and ginger. There's also a quite intense brineyness. It screams its maritime nature. The taste is all muscovado, darkest caramel with sea salt, crystalised burnt marmalade. Most of all, though, there is salt. In the background, almost indiscernible, there is a whisp of peat smoke. The finish goes on and on in waves - the mouth dries and then salivates and this repeats for several minutes.
As it's 46%, I thought it could stand a splash of water. In terms of aroma, this opens up a light floral, citrus smell. If anything, the salt experience is intensified while the richness is toned down. The great experience of the finish is, alas, lost.