It is named after its principal sponsor, Super Bock beer. Bockwurst was originally said to have been eaten with bock beer. In Bavaria and Berlin it was sold during the bock beer season. Schmidt's practice of releasing a bock beer in the Spring started in the 1800s. Brands introduced after prohibition included Pale Lager Beer, Deer Run Ale, and Koch's Bock Beer. There is a 1904 example which advertises bock beer for the Svendborg Brewery. Also produced a strong Bock beer, Wodan. Einbeck is the birthplace of bock beer, a beer with a high alcohol content. It also produced the spring Bock beer and even Home Beer. At holidays like Christmas and Easter bock beer is also available. Bavarian Beer (draft), Bavarian Master Brand (bottled), and Bavarian Bock Beer. Heineken Tarwebok (; ) is a bock beer produced by the Dutch brewing company Heineken. Stolichno is a Bulgarian bock beer () produced by the Zagorka Brewery since 2004. Products sold included "Bock Beer", "Wurtzburger" (an old-fashioned German brew), and "Lake City Export".