Among the more than 100 single-malt distilleries in Scotland, the Glenrothes has made a name for itself by being one of the few that labels its whiskies by vintage rather than years in the cask. The reasoning behind this is that the Glenrothes believes in bottling a single malt when it is at its peak of perfection, not just after a certain length of time in the barrel. The just-released Glenrothes 1992 Vintage, 2nd Edition ($250) bears this out.

Some may remember the first Glenrothes 1992 Vintage, which was…