Yeast
Ringwood — Jasper Yeast
Jasper Yeast
Spec sheet The maker publishes these figures for this exact product.
- Lab
- Jasper Yeast
- Product code
- JY347
- Form
- liquid
- Type
- ale
- Attenuation
- 68–72 %
- Temperature
- 20–23 °C
- Flocculation
- high
- Alcohol tolerance
- 10 %
- STA1
- not published — treat as unknown
Description
A vigorous top-cropping English strain for malt-forward beer, layering distinct fruit esters over a substantial malt backbone. It settles hard enough to drop bright without filtration, but it demands attention: start-up is slow, so oxygenate again on day two, keep it off the cold end, let it free rise past halfway, and allow a long diacetyl rest.