An Etymological Dictionary of the German Language/Bärme

by Friedrich Kluge

Bärme, f., ‘yeast,’ borrowed from the equiv. LG. barme, m., which corresponds to AS. beorma and E. barm. Lat. fermentum (if it does not belong to formus, Gr. θερμός, ‘warm’) is perhaps akin to it. Teut. b, Lat. f, are Aryan bh.