D defs.my
Entry 1 sense Webster, 1913

Top fermentation

· IPA
01 An alcoholic fermentation during which the yeast cells are carried to the top of the fermenting liquid. It proceeds with some violence and …
  1. 1.
    An alcoholic fermentation during which the yeast cells are carried to the top of the fermenting liquid. It proceeds with some violence and requires a temperature of 14-30° C. (58-86° F.). It is used in the production of ale, porter, etc., and of wines high in alcohol, and in distilling.