Weihenstephaner Hefeweissbier

The Bayerische Staatsbrauerei Weihenstephan is a German brewery owned by the Free State of Bavaria located on the site of the former monastery Weihenstephan Abbey in Freising, Bavaria. In 2014, the total output was 403,039 hectolitres (343,457 US bbl). The brewery advertises itself as "The World's Oldest Brewery" although this is not historically tenable. Until the 1950s, the brewery described its date of foundation as the year 1146. At this time, a document allegedly dating to the year 1040 resurfaced. In it, Otto I, Bishop of Freising, bestowed a brewing right upon the abbey. The document is generally dismissed as a forgery from the early 1600s. The first written record of the brewery dates to the year 1675. Another source, dating to 768, indicates the presence of a hop garden nearby.

Source: Wikipedia