White Labs WLP001 California Ale yeast vs White Labs WLP004 Irish Ale yeast: specs compared
Updated 05 September 2026.
5
specs differ
White Labs WLP001 California Ale yeast and White Labs WLP004 Irish Ale yeast differ on 5 specs: species, fermentation temperature, apparent attenuation, alcohol tolerance, flocculation.
| Spec | White Labs WLP001 California Ale yeast | White Labs WLP004 Irish Ale yeast |
|---|---|---|
| Manufacturer | White Labs (liquid) | White Labs (liquid) |
| Species | Saccharomyces cerevisiae, top-fermenting ale (Chico strain) | Saccharomyces cerevisiae, top-fermenting ale |
| Fermentation temperature | 20 to 23 C (68 to 73 F) | 18 to 20 C (65 to 68 F) |
| Apparent attenuation | 73 to 80 % (73 to 80% published; 76.5% typical) | 69 to 74 % (71.5% typical) |
| Alcohol tolerance | High tolerance | Medium to high tolerance |
| Flocculation | Medium | Medium to high |
Questions and answers
How do White Labs WLP001 California Ale yeast and White Labs WLP004 Irish Ale yeast compare?
White Labs WLP001 California Ale yeast and White Labs WLP004 Irish Ale yeast differ on 5 specs: species, fermentation temperature, apparent attenuation, alcohol tolerance, flocculation.