Beer Of The Week: Kasteel Donker July 8, 2022 One-minute read 3/5 Beers Blog • Personal • Beer Brewer: Kasteel Brouwerij Vanhonsebrouck Beer: Kasteel Donker Type: Belgian Quadrupel Rating: 3/5 Notes: Rich and sweet, but it had a slightly bitter aftertaste. Would I drink it again?: Yes