One Cask at a Time bottles single casks of Scotch whisky. Casks are entered into open competition individually, so a bottling without a medal is one that was not entered rather than one that lost.

Medals are shown on the bottle that won them, on that cask's own page, and a sold-through cask keeps its record.

Written up by Whisky Magazine, DRAM Scotland, The Spirits Business, The Gentleman's Journal, The Whiskey Wash, The Whisky Wire and the Bonded Warehousekeepers Association.