Wyoming Whiskey National Parks No. 4 is a limited-edition Kentucky Straight Bourbon Whiskey celebrating Mammoth Hot Springs in Yellowstone National Park. This is the fourth collectible release in Wyoming Whiskey's annual National Parks Series, crafted in partnership with Yellowstone Forever to support preservation of Wyoming's remarkable natural landscape.

Distilled at Wyoming Whiskey's distillery in Kirby, Wyoming — one of the first legal distilleries in the state, founded in 2006 — this bourbon is aged for a minimum of five years and bottled at 49% ABV (98 proof). The mash bill is composed of 68% corn, 20% wheat, and 12% malted barley, yielding a softer, sweeter style of straight bourbon.

The nose opens with crème brûlée, cherry compote, toasted coconut, and confectioners' sugar. On the palate, expect crème caramel with Mexican vanilla and candied ginger. The finish lingers with honeysuckle, dark chocolate, and espresso. Reviewers note this bourbon drinks remarkably mature beyond its five years, with complexity and depth reminiscent of a 10-12 year expression.

Each bottle features a collectible label inspired by the iconic photography of F. Jay Haynes, the official photographer of Yellowstone National Park, whose 19th-century images helped define America's first national park.