An excellent choice in the production of stouts and other dark beers, Wyeast's Irish Ale strain is the classic strain from the Guiness Brewery. Although it is most popularly used in stouts, it can produce a number of wonderful beers and can be used to great effect with high gravity worts. At lower temperatures this yeast is crisp and dry, with an underlying fruitiness that becomes more evident and estery with higher fermentation temperatures.
| Brand | Wyeast |
| Beer Styles | American Barleywine, Baltic Porter, Dry Stout, Foreign Extra Stout, Spice/Herb or Vegetable Beer, Imperial IPA, Irish Red Ale, Oatmeal Stout, Other Smoked Beer, Robust Porter, Scottish Export 80, Scottish Heavy 70, Scottish Light 60, Strong Scotch Ale, Sweet Stout, Wood-Aged Beer |
| Alcohol Tolerance | 12% ABV |
| Attenuation | 71-75% |
| Flocculation | Medium |
| Cell Count | 100 Billion |
| Temperature Range | 62-72 F |