Wood is the headline. First-fill and refill American white oak ex-bourbon casks lay the foundation, bringing toffee, Werther’s-style butterscotch and browned apple. The whisky is then finished in casks made entirely from Scottish oak, which tends to be spicier and more tannic than American oak, adding incense, mace, walnut shell and antique wood. Eighteen years of slow oxidation build beeswax and old leather, while Fettercairn’s fruity spirit keeps dried apricots, sultanas and blood orange in the mix.