Lost Lantern Single Cask Boulder Spirits Colorado Single Malt Whiskey Review

Self-described whiskey nerds, Lost Lantern Whiskey co-founders Nora Ganley-Roper and Adam Polonski built their brand by hunting down whiskies no one has discovered and sharing the stories of distilleries they’re most excited about. Lost Lantern is an independent bottler, meaning they do not distill anything but instead acquire spirits from others to make unique blends and expressions. Lost Lantern has three main categories: Blend series, which Lost Lantern uses to create unique blended expressions; the Single Distillery series, which is the same but blended from products of one distillery; and the Single Cask series, which “shine[s] a light on a single distillery through the lens of a single barrel of whiskey.” You can find rich detail of the mash bill, age, and any other unique traits for each whiskey on Lost Lantern’s website, an uncommon practice which most connoisseurs appreciate.

The subject of today’s review is an expression from their Single Cask Series: the Boulder Spirits Colorado Single Malt Whiskey – 7-year. Boulder Spirits, located in its namesake town, focuses on single malt whiskeys, a category becoming increasingly common in the U.S. and recently recognized as its own official category in 2025. It is, as advertised, made from 100% malted barley and aged for 7 years in a new oak barrel at Char 3, and is 69.4% alcohol.