Made In the San Francisco Bay Area
GigaYeast, Inc.

American Lager Yeast GY030

Attenuation Medium Gravity*                        79% – 83%

Attenuation High Gravity*                              72% – 75% (9.4% – 10.1% ABV)

Temperature Range:                                   48˚F – 60˚F

Flocculation:                                                  Medium



Think you don’t like American Lager?  Think again.  This yeast is a powerful attenuator that creates a dry lager with a slightly fruity finish and very little sulfide and diacetyl.  Perfect for lager styles where you desire a dry, less malty finish.     

Representative Styles:

Lager Styles                                                      Black Lager

Pilsner Styles                                                    Schwarzbier

Imperial Pilsner


* 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.