Made In the San Francisco Bay Area
GigaYeast, Inc.

German Lager Yeast GY045

Attenuation Medium Gravity*                        74% – 78%

Attenuation High Gravity*                              58% – 61% (7.6% – 8.3% ABV)

Temperature Range:                                   50˚F – 60˚F

Flocculation:                                                  Medium/Low



Bottom fermenting German yeast used in commercial breweries around the world.  Produces a slightly sweeter but clean beer with a malty finish.   Perfect for pilsners, märzen, Festbier etc .  May require a diacetyl rest after fermentation. 


Representative Styles:

Lagers                                    Keller Bier

Märzen                                   Schwarz Bier

Bock                                       Pilsners


* Medium Gravity is 14˚ – 16˚Plato.  High Gravity is 23˚- 25˚Plato. 

  The working temperature range represents the range at which fermentation for a given strain produces a typical attenuation- not necessarily the ideal temperature for your particular beer style.  As a rule of thumb, start ale yeast fermentation at 68˚ – 72˚F and then lower or raise temp as desired.  Lager Yeast are typically fermented at 45˚ – 58˚F.  If desired, Lager Yeast can be given a “hot start” at 65-68˚F and then lowered to the primary temperature after active fermentation begins (10-20hrs). 

GigaYeast laboratory is still gathering data on many of our strains.  Information provided here may change some in the future.  Please call if you need more info.