I cracked one of my Penley Estate 2010 Reserve Cabernet Sauvignon tonight. Here are my tasting notes:
A big classy full-bodied Coonawarra cabernet. Luscious ripe cassis, blueberry and black plumb flavours predominate, along with a hint of mint, liquorice and tobacco across that unique earthy Coonawarra background. Nice complexity and great length of finish. A very nice wine.
The only downside is that the oaky tannins are still quite firm and feel a little chalky and mouth-drying. I think the tannins still need quite a bit more bottle time to fully integrate. The good news is that the wine has a good acid balance, so it should be capable of carrying the tannins the distance. I suspect the wine needs a least another 5 years, maybe even 10 years, but should be a lovely, or possibly a stunning wine by then.
Note, after having been decanted for several hours, those tannins settled down a bit, so if you are planning on drinking the wine young, decanting is highly recommended.