1997 Kenwood Zinfandel Jack London Vineyard - after the discovery of some Kenwood over a decade older, that had about lost any attraction it once had (I rate wine at three levels - good, so-so and stew pot material and the 85 was sliding into the last category) I figured I'd better sample some later Kenwood.
This was bottled in the later bottles where they etched (sandblasted?) a 'label' including a wolf's head directly onto the glass. It showed as fully mature but with some fruit detectable and a long smooth finish. Definitely not a stew pot wine, but it was a single bottle anyway.
While rooting around for that I came across some Sterling and Beringer and Caymus and Flora Springs all of mature age so will plan on accompanying the next few Friday evening steaks with a line up of those.