SafLager W-34/70 vs SafLager S-23: which to use
SafLager W-34/70: Fermentis · SafLager S-23: FermentisThe two strains side by side on the numbers that decide it, and which to reach for.
Gauge readout
Attenuation80 to 84 %
Alcohol tolerance9 to 11 % ABV
Fermentation temp12 to 18 C (54 to 64 F)
Attenuation50%75%100%
Alcohol010%20% ABV
Temperature02040 C
Published data side by side
| Manufacturer | SafLager W-34/70: Fermentis · SafLager S-23: Fermentis |
|---|---|
| SafLager W-34/70 temperature | 12 to 18 C (54 to 64 F) |
| SafLager S-23 temperature | 12 to 18 C (54 to 64 F) |
| SafLager W-34/70 attenuation | 80 to 84 % |
| SafLager S-23 attenuation | 80 to 84 % |
| SafLager W-34/70 alcohol tolerance | 9 to 11 % ABV |
| SafLager S-23 alcohol tolerance | 9 to 11 % ABV |
| SafLager W-34/70 flocculation | Fast sedimentation |
| SafLager S-23 flocculation | Fast sedimentation |
Notes
Both are dry lager strains, but W-34/70 is the neutral Weihenstephan reference while S-23 leaves more fruit and ester.
Choose W-34/70 for a clean German Pilsner or helles where the lager should read neutral.
Choose S-23 for a fruitier lager or an Oktoberfest where a little ester adds to the malt.
The strains in full
Sources: Fermentis SafLager W-34/70 product page · Fermentis SafLager S-23 product page