Marketed as Corsendonk Abbey Brown Ale in North America.
Launched 1982 by Jef Keersmaekers as Pater Noster. Brewed by Brasserie Du Bocq since launch. 
Ingredients: Caramel, Pilsen and Munich barley malts, and Saaz, Kent and Hallertau hops
Brewed with roasted malt, hence its deep dark reddish colour. It is a mellow, dark, top-fermented beer, refermented and matured in the bottle to obtain a lively, bubbly beer with a rich head