Tasted over two nights. The wine was fairly hard and unyielding even after 3 hours on the first night. Graphite, dark tobacco, wood smoke, and dried herbs dominated the nose and there was very little discernable fruit, and no fruit sweetness at all. The palate reflected the nose, with hard acid. This did not bode well.
What a difference a day makes. The nose is still mostly savoury (graphite still dominating) but some blackcurrant is creeping through. The palate, however, has opened up considerably and the fruit is shining again. A lovely balance between the fruit and the oak derived elements, with grippy tannins and the acid freshens the wine in a supporting way. Full bodied, with a long finish and satisfying mouthfeel.
Excellent wine, second time around

I generally go by the working theory of "the older the wine, the shorter the decanting time", but this was an exception.
Cheers
Allan