Tamdhu's Batch Strength series began in 2015 as the cask-strength companion to the standard 10 Year Old, and has since become the distillery's calling card — a numbered, non-age-stated, non-chill-filtered, natural-colour bottling drawn entirely from first-fill Oloroso sherry casks of both European and American oak. Each batch carries its own ABV; Batch 9, released in 2022, came out at 57.8%.
The format reflects Ian Macleod's strategy since taking the distillery over from Edrington in 2011: lean fully into the sherry-cask identity, refuse to dilute or filter, and let the batch-to-batch variation speak for itself. There is no age statement because the casks are selected for character rather than calendar — although insiders suggest the components run from around eight to fifteen years.
Batch 9 is notably dense even by Tamdhu's standards. The European oak gives the dry, tannic, walnut-and-clove backbone; the American oak brings vanilla and softer red fruits; the high strength projects all of it loudly. A few drops of water unlock more of the orange-peel top notes and tame the alcohol burn without dimming the sherry intensity.
It is, frankly, an exercise in maximalism — but a disciplined one. Where lesser sherry bombs collapse into one-dimensional sweetness, Batch 9 holds its structure right through the finish. For followers of the Tamdhu house style this is the unfiltered version of the argument, and it remains one of the more honest cask-strength sherry malts on the market.
