Specifically designed for bottle and cask conditioning.
SafAle™ F-2, is a Saccharomyces cerevisiae that has been specifically selected for secondary fermentation in bottle and in cask. This yeast assimilates very little maltotriose but assimi-lates basic sugars (glucose, fructose, saccharose, maltose) and is caracterized by a neutral aroma profile respecting the base beer character.
Yeast (Saccharomyces cerevisiae), emulsifier E491.
From 2 to 35g/hl at 15-25°C (59-77°F).
SafAle™ F-2 should not be rehydrated directly in the beer.
Sprinkle the yeast in minimum 10 times its weight of sterile water at a temperature of 25 to 29°C (77°F to 84°F).
Leave to rest 15 to 30 minutes. Gently stir.
Add 5 to 10 grams of sugar per liter of beer (to obtain a saturation of 2.5 to 5.0 g/l of CO2). Pitch the sweetend beer, that should be at fermentation temperature (20-25°C) with the rehydrated yeast.
Carbonation will be achieved in 1 to 2 weeks at 20-25°C*
At the end of refermentation, the beer can be cooled down and will gain in roundness after 2 to 3 weeks.
* carbonation at 15°C can take over 2 weeks
Fermentis dry brewing yeasts are well known for their ability to produce a large variety of beer styles. In order to compare our strains, we ran fermentation trials in laboratory conditions with a standard wort for all the strains and standard temperature conditions (SafLager: 12°C for 48h then 14°C / SafAle: 20°C). We focused on the following parameters: Alcohol production, residual sugars, flocculation and fermentation kinetic. Given the impact of yeast of the quality of the final beer it is recommended to respect the recommended fermentation instructions. We strongly advise users to make fermentation trials before any commercial usage of our products.