There’s something about single malt whiskey. Single malt is romantic in a way gin, vodka, brandy or rum are not. It stirs the soul. Single malt whiskey is whiskey made from a single distillery, from malted barley. Most Irish whiskeys — and 90 per cent of whiskeys sold worldwide — are blended, meaning they are made from a combination of grains. Single malts make a selling point of how long they have been aged in oak casks. It helps that a lot of them come from tiny distilleries in the beautiful western isles of Scotland. Single malts are at the…