SafAle S-04 yeast vs SafLager S-23 yeast: specs compared
Updated 05 September 2026.
4
specs differ
SafAle S-04 yeast and SafLager S-23 yeast differ on 4 specs: species, fermentation temperature, apparent attenuation, flocculation.
| Spec | SafAle S-04 yeast | SafLager S-23 yeast |
|---|---|---|
| Manufacturer | Fermentis (dry) | Fermentis (dry) |
| Species | Saccharomyces cerevisiae, top-fermenting English ale (Whitbread strain) | Saccharomyces pastorianus, bottom-fermenting lager |
| Fermentation temperature | 12 to 25 C (54 to 77 F) | 12 to 18 C (54 to 64 F) |
| Apparent attenuation | 74 to 82 % | 80 to 84 % |
| Alcohol tolerance | 9 to 11 % ABV | 9 to 11 % ABV |
| Flocculation | High, fast sedimentation | Fast sedimentation |
Questions and answers
How do SafAle S-04 yeast and SafLager S-23 yeast compare?
SafAle S-04 yeast and SafLager S-23 yeast differ on 4 specs: species, fermentation temperature, apparent attenuation, flocculation.