Leading American single malt producer Stranahan’s has announced several changes to its Stranahan’s Original whiskey, as the Colorado craft distillery celebrates 15 years.

This includes new packaging, and a blend of older liquids: four-year, five-year, six-year and seven-year old American single malts. The four-year provides Original’s signature malt-forward character, while the older barrels add spice and oak complexity to the final whiskey, the company says.

Since its first release 15 years ago, Stranahan’s has remained a pioneer in American single malts and Colorado distilling, including its annual Snowflake release, the recent Mountain Angel 10 Year Old (the distillery’s oldest release to date) and core expressions like Sherry Cask and Blue Peak. The refresh of Stranahan’s Original in the core lineup is meant to honor this 15 year commitment.

Stranahan’s Original is bottled at 47% ABV. It is available for purchase nationwide at a suggested retail price of $55 per 750-ml. bottle.