Before Prohibition, many American distillers added small amounts of fruit juices to sweeten the whiskey as it aged in wooden barrels. Leopold Bros. revives this classic style of whiskey production by juicing world-renowned Montmorency tart cherries from Michigan, and blending the juice with their whiskey. The spirit then rests in used bourbon barrels, giving the flavors time to marry and mature while drawing out notes of vanilla, marzipan, and spice from the barrels.