So I was hoping that the Dewar's 18, which would likely be made in larger batches than the Aberfeldy single malt, would have a more consistent flavor profile and would highlight the best of Aberfeldy.
Nose: Honey, vanilla, and a darker fruit backbone. Some very nice casks on the nose. Well-balanced and enticing.
Palate: This does indeed taste a lot like the better Aberfeldy 12 bottlings I've had. Roasty and toasty. I think the best way to describe this whisky is that it's like licking the sweet interior of a cask that is part ex-bourbon and part ex-sherry.
Finish: More toastiness, and warming.
Rating (of 100): 92. Solid whisky from start to finish, and appropriate for most any mood or season. I'm happy to taste that Aberfeldy quality in there, and hopefully all bottlings of this blend consistently contain it.