White Labs WLP037 Yorkshire Square Ale from White Labs: 18 to 21 C (65 to 69 F), 68 to 72 % attenuation, Medium-High tolerance, high flocculation. Styles and substitutes.
Updated 05 September 2026.
White Labs WLP037 Yorkshire Square Ale yeast: temperature, attenuation and alcohol tolerance
White Labs (liquid)The published White Labs data for White Labs WLP037 Yorkshire Square Ale, the styles it suits, and what to use if you cannot get it.
Published technical data
| Manufacturer | White Labs (liquid) |
|---|---|
| Species | Saccharomyces cerevisiae, top-fermenting ale |
| Fermentation temperature | 18 to 21 C (65 to 69 F) |
| Apparent attenuation | 68 to 72 % |
| Alcohol tolerance | Medium-High |
| Flocculation | High |
Notes
Recommended for Yorkshire bitter, ESB, brown ale, porter.
Character: Malty, minerally Yorkshire ale character with light fruit.
The Yorkshire Square strain, malty and minerally with high flocculation and lower attenuation that leaves body, the character behind a traditional Yorkshire bitter. It clears fast and needs good oxygenation and a diacetyl rest.
Substitutes and styles
Questions and answers
What is the manufacturer of the White Labs WLP037 Yorkshire Square Ale yeast?
White Labs (liquid)
What is the species of the White Labs WLP037 Yorkshire Square Ale yeast?
Saccharomyces cerevisiae, top-fermenting ale
What is the fermentation temperature of the White Labs WLP037 Yorkshire Square Ale yeast?
18 to 21 C (65 to 69 F)
What is the apparent attenuation of the White Labs WLP037 Yorkshire Square Ale yeast?
68 to 72 %