Stranahan's Diamond Peak is a premium annual limited-release American single malt whiskey produced at Stranahan's distillery in Denver, Colorado — the state's first legal distillery since Prohibition. Crafted from 100% malted barley and handmade in small batches, it is double-distilled and matured in new American oak barrels before receiving a unique cask finish that defines each year's expression. The whiskey is cut to proof with pristine Rocky Mountain water and bottled non-chill filtered to preserve its full character.

Each annual Diamond Peak release showcases a different finishing cask, creating a series of limited expressions with distinct tasting profiles. Releases have included finishes in Bushmills Irish single malt barrels, José Cuervo Reserva de Familia extra añejo tequila casks, Caribbean rum casks sourced from the Greater and Lesser Antilles, and barrels from acclaimed Colorado craft breweries. Flavor profiles range from butterscotch, cereal sweetness, and toffee to tropical fruit, dark chocolate, rich malt, and warming spice, depending on the edition. Bottled at 45% ABV (90 proof) in a 750ml bottle, Stranahan's Diamond Peak is recognized as the most awarded American single malt whiskey.