The mash and the casks both matter. Single pot still whiskey uses a mix of malted and unmalted barley, which gives a creamy, oily texture and a spicy character that shows up as nutmeg, allspice and mace. Ex-bourbon barrels add vanilla spiced oak and rich toffee, while Oloroso sherry brings dried figs, dark chocolate and cigar box. Cream sherry and ruby port are the new additions, adding caramel apples and dried raspberries. Eighteen years in wood push it toward leather and coffee cake.