Buy Stellum Spirits OnlineBuy Stellum Spirits Online. Stellum Spirits is devoted to bringing American whiskey into the modern age with simple, elegant blends and single barrels selected with care and intention. Our whiskeys are created through a rigorous process of study, observation, and experimentation. We are driven by progress, polish and—above all—attention to detail. We will always think critically about how to make our whiskey better and more accessible.