Yeast
Leicester — Jasper Yeast
Jasper Yeast
Spec sheet The maker publishes these figures for this exact product.
- Lab
- Jasper Yeast
- Product code
- JY323
- Form
- liquid
- Type
- ale
- Attenuation
- 70–75 %
- Temperature
- 20–23 °C
- Flocculation
- medium-low
- Alcohol tolerance
- 7 %
- STA1
- not published — treat as unknown
Description
A heritage Midlands strain for malt-driven traditional bitters. Esters stay low, offering little more than biscuit and a hint of fruit, and sulfur is minimal for a crisp finish. It wants high-mineral wort, ferments slowly over a week or two, and prefers to be kept at the warm end of its range.