Review [source]:

Making use of the brand’s signature 10-year bourbon, Decadence is blended in small batches and finished in American oak barrels that previously held New York’s Crown Maple artisan maple syrup. Consumers and critics are said to have found the maple syrup barrel finish delivers a rich, smooth and slightly sweet mouthful of whiskey that includes a faint maple note.

Nose: Sugared pecans, maple, birch beer, charred oak.

Palate: Vanilla, burnt sugar, cinnamon, bark.

Finish: Brown sugar, shortbread, mellow tobacco, old whiskey; delivers a slightly sweet, creamy-rich mouthfeel and lingering finish.