Unfiltered and often young, not fully lagered versions of Germanic lager styles of beer such as Münchner-Style Helles and Dunkel, Dortmunder/European-Style Export, Bohemian-style Pilsener and German-style Pilsener.
Kellerbier is noticeably less carbonated and may be noticeably sweeter than it’s filtered, fully attenuated and lagered derivative. They will not be clear, exhibiting a small amount of yeast haze in the appearance. Low to moderately low levels of yeast-generated sulfur compounds will be apparent in aroma and flavor. Dry hopping is acceptable. Head retention may not be optimal. Low levels of acetaldehyde may be apparent.