1) German beer style 
Kellerbier, also Zwickelbier, is a type of German beer which is often not clarified or pasteurised. Kellerbier can be either top- or bottom-fermented. The term Kellerbier literally translates as `cellar beer`, referring to its cool lagering temperatures, and its recipe likely dates to the Middle Ages. In comparison with most of today`s filtered......
Fruity, highly-hopped, dry German lager usually served on draft since it is unfiltered or minimally filtered.