Waterloo Antique is the darkest Barrel Aged Gin we’ve seen yet. It’s dark brown, almost root beer or cola hue sets it apart. (Is this really an aged gin?) Another aspect of Waterloo Antique that is rare among aged gins is both the length of the aging and the methodology. It is composed of a blend of gins, each which have been aged different lengths of time, and in some cases as much as two years.