"Bolten-Brauerei is a brewery in North Rhine-Westphalia, Germany. It was founded in 1266 when the Lord of Myllendonk authorised the brewing of beer at the current ...
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site in Korschenbroich and claims to be the oldest altbier brewery in the world.
In 2011 it produced about 50,000 hectoliters of beer." - (en.wikipedia.org 10.11.2022)