Are dry yeast suitable for high gravity fermentations?
Fermentis dry yeast are propagated in fed batch systems where nutrients and Oxygen are continuously brought to the fermentation media thus enhancing the fermentability of the yeast. Fermentis dry lager yeast and in particular Saflager S-23 have shown increased performance over fresh yeast for high gravity brewing, successfully fermenting wort with original gravity of up to 22 Plato.