Word Study
top fermentation
CIDE DICTIONARY
top fermentation,
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. [Webster 1913 Suppl.]
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