Made In the San Francisco Bay Area
GigaYeast, Inc.

British Ale Yeast One GY011

Attenuation Medium Gravity*                        75% – 79%

Attenuation High Gravity*                              73% – 75% (9.0% – 9.4% ABV)

Temperature Range:                                   64˚F – 77˚F

Flocculation:                                                  High


Versatile house strain from a traditional UK brewery.  Strong attenuation over a broad temperature range and low esters make this yeast perfect for a wide variety of styles.  GY011 is a strong flocculator that creates a clear beer.


Representative Styles:

British Ales                        Pale/Amber Ale

Barley Wine                      Scotch Ale

Bitter                                 Stout

India Pale Ale



* 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.