The Glenrothes distillery is guided by what it calls its four corners: Water, Slow Distillation, Sherry Seasoned Casks, and Natural Color. The distillery also relaunched its brand recently, doing away with the previous method of categorizing its line and returning age statements. This is a refreshing choice given how many brands are going in the opposite direction. While the current line is mostly age statements, however, the Glenrothes Sherry Cask Reserve is from before the relaunch and, as the name would indicate, entirely aged in ex-sherry casks. It first appeared in 2014. We bought the bottle some time before this review went live, so what was once an easy introduction to a sherried single malt is now about a discontinued offering.