Yeast
South London — Jasper Yeast
Jasper Yeast
Spec sheet The maker publishes these figures for this exact product.
- Lab
- Jasper Yeast
- Product code
- JY320
- Form
- liquid
- Type
- ale
- Attenuation
- 70–75 %
- Temperature
- 17–22 °C
- Flocculation
- medium-low
- Alcohol tolerance
- 10 %
- STA1
- not published — treat as unknown
Description
A polished southern English heritage strain aimed at best bitters and strong ales. It ferments slowly, typically a week or two, which builds malt depth, and leaves mild stone-fruit esters with a faint herbal edge and almost no sulfur. It needs high-mineral wort to finish, and carries alcohol better than most heritage English isolates.