noun
bottom fermentation
Technical brewing term for fermentation where yeast settles at the bottom of the vessel, used for lager-type beers.
下面発酵はラガービールの製造に使われる。
Bottom fermentation is used in the production of lager beer.
Top fermentation, where yeast rises to the surface, used for ales. Contrasts with 下面発酵.
Compound of 下面 (lower surface) and 発酵 (fermentation), directly describing the process.