Yeast
O’Malley’s Irish — Jasper Yeast
Jasper Yeast
Spec sheet The maker publishes these figures for this exact product.
- Lab
- Jasper Yeast
- Product code
- JY038
- Form
- liquid
- Type
- ale
- Attenuation
- 68–75 %
- Temperature
- 18–21 °C
- Flocculation
- medium-low
- Alcohol tolerance
- 11 %
- STA1
- not published — treat as unknown
Description
The Dublin dry stout strain, and about as recognizable as Irish yeast gets. It finishes crisp and clean, though a faint buttery note can linger once primary is done, so give it a proper diacetyl rest. Warmer fermentations bring out a little more fruit.