The brewery say:
Kasteel Donker is a member of the Belgian quadrupel family. These are strong dark brown beers where the roasted malt predominates. The very first beer of the Kasteel range is a full-mouthed beer with hints of caramel, coffee and chocolate. The sweet initial taste makes this beer surprisingly complex but very accessible.
| Brewery | Van Honsebrouck (Belgium) |
| ABV | 11.0% |
| Style | Belgian Quad |
| Package | 330ml Bottle |
| Allergens | Barley |
| Dietary | - |