It had a bit of that rubber fouling on the nose and definitely that rubberband bitterness in the taste, but some of that goes away after leaving the bottle open overnight.
Actually quite alright, and the best part easily. I get pear, cinnamon, a bit of cardamom and mint. The sauternes is actually not super-strong on here, but does impart a dried sultana brightness which increases as you leave it in the glass. Becomes actually quite pleasantly sweet, woody and fragrant with a fair amount of water added, and turns slightly more into a kind of ginger/christmas cake type of profile.
I suppose I can at least attempt to quantify "what kind of taste of sulfur" it is, and it's that sharp rubberband/gunpowder type. Which, to be fair, could be worse - it does not have that rotting cabbage/old sinkwater/vomit type of sulfur.
With ample water it's still not easily drinkable but doable. The arrival before the sulfur kicks in is pretty pleasant, featuring the sauternes and a nice sweet malt blast, but quickly gives way to the bitter sulfur. The sauternes doesn't do sulfur any favors here as it makes it more astringent in mouthfeel and vinegary overall, which combined basically puckers your tongue outright in the development and it gets hard to really taste/judge much past there.
A rather ordinary one, which is maybe surprising given how off it tastes. As the sulfur bitterness wears off it goes into a somewhat woody, malty finish that is muffled a bit by the sauternes, its length is medium.