Saflager W-34/70
Fermentis SafLager W-34/70 Yeast x 11.5g is a world-renowned German lager strain originally selected from Weihenstephan and widely used by professional and home brewers.
It produces clean, highly drinkable lagers with a balanced combination of subtle floral and fruity aromas. Ideal for Pilsners, Helles lagers, Märzen, Bock, Vienna lager and many lager-style fresh wort kits.
- Recommended fermentation range: 12–15°C
- Clean and balanced lager profile
- Subtle floral and fruity aromas
- Suitable for many classic lager styles
- Sachet size: 11.5g
In stock (can be backordered)
Product Description
Fermentis SafLager W-34/70 Yeast x 11.5g is one of the most widely recognised lager strains in the brewing industry. Originally selected from Weihenstephan in Germany, this famous bottom-fermenting yeast has been used around the world to create clean, balanced and highly drinkable lagers.
W-34/70 produces a refined fermentation profile with gentle floral and fruity aromas. These subtle yeast characteristics complement the malt and hops without overpowering them. As a result, the strain works well across a wide range of traditional and modern lager styles.
When fermented within the recommended temperature range, the finished beer should display clean flavours, smooth malt expression and a crisp, refreshing finish. This makes it a dependable choice for homebrewers who want classic lager character and reliable fermentation performance.
Suitable Beer Styles
Use this versatile lager strain for:
- German Pilsner
- Czech-style Pilsner
- Munich Helles
- Vienna Lager
- Märzen
- Oktoberfest Lager
- Bock
- Doppelbock
- Schwarzbier
- International Pale Lager
- Australian Lager
- Japanese-style Rice Lager
- Mexican-style Lager
- Fresh wort lager kits
Its clean character allows delicate Pilsner malt, toasted Vienna malt and traditional hop varieties to remain clear in the finished beer.
Yeast Characteristics
- Yeast type: Bottom-fermenting lager yeast
- Format: Active dry brewing yeast
- Sachet size: 11.5 grams
- Origin: Weihenstephan, Germany
- Recommended fermentation range: 12–15°C
- Flavour profile: Clean, floral and gently fruity
- Suitable for traditional and modern lagers
- Yeast included per pack: One sachet
Fermentation performance may vary depending on pitching rate, wort gravity, temperature control and available nutrients.
Fermentation Temperature
Fermentis SafLager W-34/70 Yeast x 11.5g performs best between approximately 12–15°C.
Fermenting near the lower end of this range will generally produce the cleanest and most traditional lager character. Slightly warmer conditions within the recommended range may create a little more fruit expression while still maintaining a balanced profile.
Stable temperature control is important. Sudden changes may affect yeast performance, fermentation speed and the final flavour.
A fermentation fridge with a digital temperature controller can help maintain suitable conditions throughout the brewing process.
General Pitching Instructions
- Clean and sanitise the fermenter and all equipment that will contact the wort.
- Transfer the wort into the sanitised fermentation vessel.
- Bring the wort within the recommended pitching range.
- Pitch the yeast according to the directions printed on the sachet.
- Seal the fermenter and maintain a steady temperature between 12–15°C.
- Allow fermentation to continue until the specific gravity remains stable over consecutive days.
- Complete a diacetyl rest where appropriate.
- Cold condition the beer if suitable for the chosen style.
- Bottle or keg only after confirming fermentation is complete.
Higher-gravity beers, larger batches or colder fermentation may require additional yeast. Always consider the wort volume and original gravity when calculating the pitching rate.
Using W-34/70 with Fresh Wort Kits
W-34/70 is a popular match for fresh wort kits because many lager kits are sold without yeast.
It works particularly well with:
- Japanese Rice Lager
- Aussie Draught
- NZ Pilsner
- Mexican Lager
- Classic Lager
- Dry Lager
- German Lager
- Pilsner
- Vienna Lager
- Bock-style fresh wort
The strain’s clean fermentation profile allows the professionally prepared malt and hop character of the wort to remain the focus.
Diacetyl Rest and Cold Conditioning
When fermentation nears completion, gradually raising the temperature may help the yeast reduce diacetyl and other fermentation by-products.
Once fermentation is complete, lowering the temperature gradually can help the yeast settle and improve beer clarity. A period of cold conditioning may also smooth the flavour and produce a more refined lager finish.
Always confirm stable gravity readings before reducing the temperature or packaging.
Yeast Nutrient Recommendation
Adding a suitable yeast nutrient can support a healthy and complete fermentation, particularly in high-gravity wort or batches fermented at colder temperatures.
Use the nutrient according to the dosage stated on the packaging. Avoid adding more than the recommended amount.
Storage and Shelf Life
Refer to the best-before date printed on the sachet.
Once opened:
- Seal the sachet securely
- Store it at approximately 4°C
- Use the remaining yeast within seven days
Do not use sachets that appear soft, swollen, damaged or poorly sealed.
Store unopened yeast in a cool, dry location according to the manufacturer’s instructions.
Shipping During Warm Weather
Dry brewing yeast may be affected by prolonged exposure to high temperatures during transport.
During warmer weather, selecting Australia Post Express may help reduce the amount of time the yeast remains in transit. Express delivery does not provide refrigerated transport, but a shorter delivery time may reduce heat exposure.
Place the yeast into suitable cool storage as soon as it arrives.
Fermentis SafLager W-34/70 Yeast x 11.5g is an excellent choice for brewers seeking reliable fermentation, clean lager flavour and traditional German brewing character. Its versatility makes it suitable for everything from crisp Pilsners to rich Doppelbocks.
