Introducing Yellowstone Toasted Special Finishes Collection Bourbon: a 4-year-old Kentucky Straight Bourbon Whiskey that has undergone a transformation using Toasted Staves, resulting in a fusion of notes of vanilla, heightened toastiness, robust oak, and tantalizing spice. Crafted by Seventh Generation Distillers, this living testament to a rich legacy of bourbon is a unique experience that pays homage to the diversity of national parks.