Not overly complex but it does what it does exceptionally well. It's like drinking liquid whoppers. Basically a chocolate malt bomb. Smells like delicious malted nougat. Great thick oily mouth feel too. Finish is more of the same, medium short, with a slight astringent burn on the first few sips which fades as you go leaving oak dipped in chocolate as it goes out. If this stuff wasn't $81 a bottle I'd be happy to drink it all the time. It's great.