Sharp (alcohol) and shy to start off, but this is a 25 year old whisky so give it time.
You'll get a sweet nose (honey/vanilla) with a nice influence of red fruits from the port cask. Also a hint of glue/rum, but it's not disturbing or dominating.
Sweet onset, then the red fruits from the port cask kick back in and it also develops an earthy note which is quite nice. I think this is a real drinker's whisky - whereas the nose was initially quite alcoholic you don't really notice the alcohol in the taste. It's a dangerous whisky as you want to keep sipping it.
This is where you notice it's a grain. The finish isn't very long and it's basically a continuation of the taste, mostly on port notes and the earthy note. No real bitterness which is nice.