AEB BIOCHEMICAL

AEB Fermolager W - 500g

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Bottom-fermenting yeast strain for brewing lager beer styles.

It delivers a clean fermentation flavour profile with very low ester and phenolic notes for a balanced crisp and fresh taste.

Compare to Fermentis Saflager W-34/70.

Best For

Best For Classic German Lager Styles

Quickly see where this product fits best in a professional brewing program.

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German Lagers & Pilsners

Suited to Pilsner, Helles, Märzen, Dunkel, and Bock, where a low-ester, low-sulfur profile keeps malt and noble hop character in front.

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House Lager Programs

A versatile dry lager strain for breweries that want one dependable yeast across multiple clean lager brands.

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Malt-Forward Lagers

Ferments clean in Märzen, Dunkel, and Bock, allowing Vienna and Munich malt character to remain expressive.

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Crisp, Dry Finishes

A published 82% attenuation and high flocculation support a dry finish and strong end-of-fermentation clarity in pale lagers.

Technical Specs

Quick Brewing Specifications

Yeast Type Lager / Bottom Fermenting
Species Saccharomyces pastorianus
Origin Weihenstephan, Freising, Germany
Attenuation 82% | Medium
Fermentation Temp 50–57°F | 10–14°C
Flocculation High
Alcohol Tolerance 9–10% ABV
Ester Profile Low
Sulfur Low
STA-1 Status Negative

Brewer Notes

Fermolager W

Clean German lager yeast for Pilsner, Helles, Märzen, Dunkel, Bock, and other classic European lager styles.

Why Brewers Use It

AEB Fermolager W is a dry bottom-fermenting lager yeast originating from Weihenstephan in Freising, Germany. It delivers 82% attenuation with high flocculation, restrained ester expression, and low sulfur character, producing a clean, crisp fermentation profile that supports traditional German and European lager styles.

Pro Brew Notes

Fermolager W is a strong choice for breweries running multiple clean lager brands from a single dry strain. Its high flocculation helps beers drop bright at the end of fermentation, so brewers moving from a lower-flocculating lager strain may want to review diacetyl-rest timing and maturation schedule on the first batch.

Best Fit

Best suited for clean, malt-forward lager programs where brewers want dependable attenuation, restrained yeast character, and strong end-of-fermentation clarity across German and European-inspired beer styles.

Why Buy From Pro Brew Supply

Buy AEB yeast through Pro Brew Supply to combine yeast with malt, hops, nutrients, cleaning products, and other brewing supplies in one order. This helps reduce supplier complexity, improve total shipping efficiency, and keep production ingredients moving through one reliable source.

Brewer Resources

Brewing Builds Featuring This Product

See how this product fits into complete brewing builds with compatible malt, hops, yeast, and process aids.

Beer Style Build

German Pilsner Build

A clean, crisp German-style pilsner build focused on bright Pilsner malt character, refined noble hop aroma, and a reliable lager fermentation profile.

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Beer Style Build

German Helles Build

A soft, pale German lager build focused on clean Pilsner malt character, restrained noble hop aroma, and a smooth, balanced fermentation profile.

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Beer Style Build

American Light Lager Build

A clean American Light Lager build — Pilsen malt lightened with flaked rice and corn, delicate hopping, and neutral, well-attenuating lager yeast.

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Technical Resources

Documents & Product Support

Download technical sheets, safety documents, and product reference materials for this product.

TDS
TDS

Fermolager W Technical Data Sheet

Official technical data sheet with product specifications, fermentation performance, and brewing application information.

View TDS
SDS
SDS

Fermolager W Safety Data Sheet

Official Safety data sheet with product specifications, fermentation performance, and brewing application information.

View SDS

Need Help Choosing Yeast?

Match the right strain to your beer, process, and production schedule.

Not sure if this is the right strain for your beer? Tell us your batch size, original gravity, beer style, fermentation temperature, and production goals. Our team can help you compare options and build the rest of the order around it.
Yeast Substitution Chart Contact Pro Brew

Helpful info to send us

  • Beer style or recipe target
  • Batch size and original gravity
  • Fermentation temperature
  • Dry yeast pitch or repitch plan
  • Other ingredients you need shipped with it
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Brand Partner

About AEB Brewing

Biotechnology, yeast, and process solutions for modern breweries.

AEB Brewing provides professional brewing yeast, nutrients, enzymes, clarification aids, stabilizers, sanitation products, and process solutions for breweries looking to improve fermentation performance, consistency, and production control.
Italy Brewing Biotechnology & Process Aids

Why Brewers Choose AEB Brewing

•Professional brewing yeast portfolio
•Fermentation nutrients and process aids
•Enzymes for brewing performance and efficiency
•Clarification, stabilization, and filtration support
•Technical resources for craft and production breweries

Why Pro Brew Supply Carries AEB Brewing

We carry AEB because their yeast, nutrients, enzymes, clarification aids, stabilizers, and brewery process products give brewers access to a deeper technical toolbox. AEB fits well with the way Pro Brew Supply supports breweries: practical products, fast fulfillment, and help from people who understand brewing.

Buying AEB through Pro Brew Supply also lets breweries combine yeast and process aids with malt, hops, cleaning products, and other brewing supplies in one order. That means fewer supplier headaches, better shipping efficiency, and a more complete brewing solution from one source.

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