GY016 Altstadt Ale GigaYeast is an ale yeast that ferments at cold temperatures and produces a lager like ale style with a hint of fruity esters. Leaves a slight residual maltiness perfect for traditional Kölsch and Altbier styles.
Attenuation Medium Gravity* 77% – 81%
Attenuation High Gravity* 51% – 54% (6.7% - 7.3% ABV)
Temperature Range† 13˚ – 20˚C (55˚F – 68˚F)
Biere De Garde
* Attenuation was measured after 8 days with Ale yeast at 21˚C / 70˚F and Lager yeast at 10˚C / 50˚F. 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 20˚ – 22˚C (68˚F – 72˚F) and then lower or raise temp as desired. Lager Yeast are typically fermented at 7˚ – 14˚C (45˚F – 58˚F). If desired, Lager Yeast can be given a “hot start” at 18˚ – 20˚C (65˚F – 68˚F) and then lowered to the primary temperature after active fermentation begins (10-20 hrs).
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.
GigaYeast laboratory is still gathering data on many of their strains. Information provided here may change some in the future. Please contact us at firstname.lastname@example.org if you need more info. on a particular strain.