Penelope Rio is arguably the most anticipated release in the Cooper Series lineup. This four-grain bourbon undergoes a double cask finish — first in honey barrels, then in Brazilian Amburana casks — creating a dessert-forward whiskey that's unlike anything else on the American market. The moment you nose it, waves of honey, cinnamon, and butterscotch fill the glass with an inviting warmth that promises something special.

On the palate, Rio delivers on that promise. Gingerbread and honey nectar lead the way, followed by chocolate-orange and baking spice that coat every surface. The Amburana cask influence is unmistakable — warm cinnamon and a subtle woody spice that perfectly complements the honey sweetness. At 98 proof and non-chill filtered, there's real body and texture here. Each batch has been progressively refined, with the honey and Amburana notes becoming better balanced over time.

The finish is where Rio truly shines — long, sweet-savory, with toasted oak and black tea fading into lingering honey. For an Old Fashioned, this is one of the best bases you'll find — the built-in sweetness and spice mean you barely need any sugar. As a limited annual release priced at $80–$90, Rio offers genuine value for what it delivers. If you see a bottle, grab it — this one tends to disappear fast.