Fermentis SafAle™ K-97 2.5kg

SafAle™ K‑97 is a German top‑fermenting yeast designed to produce delicate, floral and subtly fruity beers. It is particularly suitable for Kölsch, Belgian Wits and certain Session Beers.

Its biotransformation capacity also makes it suitable for heavily hopped beers.

This professional 2.5 kg format meets the needs of craft breweries looking for a reliable, stable and high‑performance strain for large‑volume production. The yeast offers 80–84% attenuation, slow sedimentation and optimal behaviour between 18 and 26 °C.

Why choose this product?

• Balanced floral and fruity aromatic profile, ideal for delicate beers.
• Excellent fermentation performance with firm foam cap formation.
• Versatile strain suitable for hopped beers and German‑style ales.

Technical specifications

• Type: Active dry top‑fermenting yeast
• Strain: Saccharomyces cerevisiae
• Apparent attenuation: 80–84%
• Flocculation: Low to medium
• Sedimentation: Slow
• Fermentation temperature: 18–26 °C
• Alcohol tolerance: 9–11%
• Dosage: 50–80 g/hl
• Ingredients: Yeast, sorbitan monostearate emulsifier (E491)
• Viable yeast: > 1.0 × 10¹⁰ cfu/g
• Purity: > 99.999%
• Lactic acid bacteria: < 1 cfu / 10⁷ cells
• Acetic acid bacteria: < 1 cfu / 10⁷ cells
• Wild yeast: < 1 cfu / 10⁷ cells
• Packaging: 2.5 kg bag
• Storage: < 25 °C (6 months), ideally < 15 °C
• Shelf life: 36 months

Technical Tips

• For heavily hopped beers, use the upper range (22–26 °C) to enhance aromatic expression.
• For direct pitching, sprinkle evenly across the wort surface to avoid clumping.
• For sensitive brews, rehydration at 25–29 °C improves viability and fermentation kinetics.

Technical FAQ

• Can it be used for heavily hopped beers? Yes, the strain handles high hop loads very well.
• Is slow sedimentation an issue? No, but a cold crash can help clarify more quickly.
• Can it be pitched cold? Yes, the E2U™ certification allows direct pitching.
• How long can an opened bag be stored? Up to 7 days at 4 °C, tightly sealed.