barm

/bɑrm/

Other forms: barms

Definitions of barm

1. noun

   a commercial leavening agent containing yeast cells; used to raise the dough in making bread and for fermenting beer or whiskey
   synonyms: yeast

   types:

   yeast cake

   small cake of compressed moist yeast

   brewer's yeast

   yeast used in fermenting beer

   mother

   a stringy slimy substance consisting of yeast cells and bacteria; forms during fermentation and is added to cider or wine to produce vinegar

   bottom fermenting yeast

   brewer's yeast used in bottom fermentation of lager

   top fermenting yeast

   brewer's yeast used in top fermentation of ale

   type of:

   leaven, leavening

   a substance used to produce fermentation in dough or a liquid