Overall Impression: The malt flavors reminiscent of an English porter and the restrained roast of a schwarzbier, but with a higher Original Gravity and alcohol content than either. Very complex, with multi-layered malt and dark fruit flavors.
Aroma: Rich malty sweetness containing light caramel to deep toast notes. Complex alcohol and ester profile of moderate strength. Some darker malt character that is deep chocolate, coffee or molasses but never burnt. No hops. No sourness. Very smooth.
Appearance: Opaque dark brown (not black). Thick, persistent tan-colored head.
Flavor: As with aroma, has a rich malty sweetness with a complex blend of deep malt, dried fruit esters, and alcohol. Has a prominent yet smooth schwarzbier-like roasted flavor that stops short of burnt. Mouth-filling and very smooth. Clean lager character. Starts sweet but darker malt flavors quickly dominates and persists through finish. Just a touch dry with a hint of roast coffee in the finish.
Mouthfeel: Generally quite full-bodied and smooth, with a well-aged alcohol warmth. Medium to medium-high carbonation, making it seem even more mouth-filling. Not heavy on the tongue due to carbonation level.
Comments: May also be described today as an Imperial Porter, although heavily roasted or hopped versions are not appropriate for this style. Most versions are in the 7–8.5% ABV range. Danish breweries often refer to them as Stouts, which indicates their historic lineage from the days when Porter was used as a generic name for Porter and Stout.