The Scotch Whisky Association recently relaxed the list of allowed casks for whisky finishing. This has led to a couple of mezcal finishes, and now also tequila casks. This one is the third that I know of, after a Chivas Extra 13 and a Kilchoman Tequila finish.Deanston 15 Years Tequila Cask comes from hand-selected casks that once held tequila from the Jaliscan Highlands in Mexico.I'm not sure tequila casks make sense, to be honest. To me they're in the corner of the vodkas, the eau-de-vies and Schnapps. Sure, fine examples exist of these spirits - I'm just not sure their casks would add a lot of interesting aromas to an already mature whisky.
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