Wyeast 2124 Bohemian Lager vs SafLager W-34/70: which to use
Wyeast 2124 Bohemian Lager: Wyeast · SafLager W-34/70: FermentisThe two strains side by side on the numbers that decide it, and which to reach for.
Gauge readout
Attenuation73 to 77 % (75% typical)
Alcohol tolerance9 % tolerance
Fermentation temp9 to 14 C (48 to 58 F)
Attenuation50%75%100%
Alcohol010%20% ABV
Temperature02040 C
Published data side by side
| Manufacturer | Wyeast 2124 Bohemian Lager: Wyeast · SafLager W-34/70: Fermentis |
|---|---|
| Wyeast 2124 Bohemian Lager temperature | 9 to 14 C (48 to 58 F) |
| SafLager W-34/70 temperature | 12 to 18 C (54 to 64 F) |
| Wyeast 2124 Bohemian Lager attenuation | 73 to 77 % (75% typical) |
| SafLager W-34/70 attenuation | 80 to 84 % |
| Wyeast 2124 Bohemian Lager alcohol tolerance | 9 % tolerance |
| SafLager W-34/70 alcohol tolerance | 9 to 11 % ABV |
| Wyeast 2124 Bohemian Lager flocculation | Medium |
| SafLager W-34/70 flocculation | Fast sedimentation |
Notes
Wyeast 2124 and W-34/70 both descend from Weihenstephan 34/70, so they make a clean German lager, though some brewers find the dry SafLager has a faint tang the liquid does not.
Choose W-34/70 for shelf life and a straight pitch.
Choose Wyeast 2124 for the liquid 34/70 if you want to avoid even a hint of dry-yeast character.
The strains in full
Sources: Wyeast 2124 Bohemian Lager specification (Brewer's Friend) · SafLager W-34/70 equivalents discussion (Homebrew Talk) · Fermentis SafLager W-34/70 product page