top fermentation

Từ điển WordNet v3.1 - WordNet Dictionary

noun

a violent kind of alcoholic fermentation at a temperature high enough to carry the yeast cells to the top of the fermenting liquid;
used in the production of ale
- top fermentation uses a yeast that ferments at higher temperatures than that used for bottom fermentation
• Hypernyms:
zymosis, zymolysis, fermentation, fermenting, ferment