SafAle US-05 vs SafAle S-04: which to use
SafAle US-05: Fermentis · SafAle S-04: FermentisThe two strains side by side on the numbers that decide it, and which to reach for.
Gauge readout
Attenuation78 to 82 %
Alcohol tolerance9 to 11 % ABV
Fermentation temp18 to 26 C (64 to 79 F)
Attenuation50%75%100%
Alcohol010%20% ABV
Temperature02040 C
Published data side by side
| Manufacturer | SafAle US-05: Fermentis · SafAle S-04: Fermentis |
|---|---|
| SafAle US-05 temperature | 18 to 26 C (64 to 79 F) |
| SafAle S-04 temperature | 12 to 25 C (54 to 77 F) |
| SafAle US-05 attenuation | 78 to 82 % |
| SafAle S-04 attenuation | 74 to 82 % |
| SafAle US-05 alcohol tolerance | 9 to 11 % ABV |
| SafAle S-04 alcohol tolerance | 9 to 11 % ABV |
| SafAle US-05 flocculation | Medium sedimentation |
| SafAle S-04 flocculation | High, fast sedimentation |
Notes
US-05 is the clean American Chico strain; S-04 is a fruity English strain that flocculates hard and drops bright fast.
Choose US-05 for a neutral American beer where hops and malt should lead and clarity can wait.
Choose S-04 for an English ale or a fast-clearing beer, accepting more fruit and a touch less attenuation.
The strains in full
Sources: Fermentis SafAle US-05 product page · Fermentis SafAle S-04 product page · SafAle S-04 attenuation, temperature and equivalents reference