Fermentis SafAle S-04 is an English ale yeast selected for fast fermentation, balanced fruity and floral notes, and rapid sedimentation. Its strong flocculation helps produce clearer beer and makes it useful across a wide range of English and American ale styles.
- Apparent attenuation: 74–82%
- Sedimentation: fast
- Alcohol tolerance: 9–11%
- Recommended fermentation temperature: 18–26°C
How to use SafAle S-04
Sprinkle the yeast gradually over the wort surface at or above fermentation temperature, or rehydrate according to the manufacturer’s directions. Keep the fermentation temperature stable and use the dosage stated on the sachet for your batch volume and gravity.
Store unopened yeast cool and dry. Seal an opened sachet, refrigerate at 4°C and use within seven days.
Compare Fermentis ale yeast strains
Yeast choice changes attenuation, sedimentation and flavour expression. Match the strain to the beer style and fermentation character you want, then follow the current sachet’s pitching-rate and temperature guidance.
- SafAle BE-134 – highly attenuative Saison strain with fruity and spicy clove character.
- SafAle K-97 – German ale strain with low esters, high attenuation and slow sedimentation.
- SafAle S-33 – fruity ale strain promoting body and mouthfeel in Belgian, strong and hazy styles.
- SafAle US-05 – clean American ale strain that leaves malt and hops prominent.
- Safbrew BE-256 – rapid abbey-style strain for strong beers with balanced aroma.
Important: Yeast strains are not interchangeable. Use the pitching rate, temperature and handling directions for the exact sachet and recipe.




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