GY080 Irish Stout GigaYeast

Regular price $15.95 Sale

GigaYeast GY080 Irish Stout is from one of the most famous stouts in the world. Creates a crisp, dry beer with a subtle fruity profile and a slightly tangy finish.  Makes an amazing stout or porter but is also great for red, amber and even pale ales. This Irish ale yeast is a robust fermenter perfect for high gravity brews and settles out well enough to create a relatively clear beer.

Attenuation Medium Gravity*

  • 82% – 86%

Attenuation High Gravity*

  • 77% – 80% (10.1% – 10.7% ABV)

Temperature Range†

  • 18˚C – 22˚C (64˚F – 72˚F)


  • Medium

Representative Styles:

  • Stout
  • Porter
  • Imperial Stout
  • Amber/Red Ale
  • English Pale Ale
* Attenuation was measured after 8 days with Ale yeast at 70˚F and Lager yeast at 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 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).
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