Brewed using a historical recipe from Bamberg's first documented brewery, "Brauerei Michaelsberg", for the "Bamberger Stiftsgarten" (a part of the same monastery that the Michaelsberg brewery originally belonged to). The brewery was active from around 1122 to 1969. This beer was brewed using hops from Spalt and the "Hopfengarten Bamberg", which has reintroduced hop cultivation in Bamberg. Schlenkerla used their official name "Hellerbräu" for this historical beer, since Konrad Graser who was a brewer at the Michaelsberg Brewery, later took over Hellerbräu (Schlenkerla) in 1866!