AEB BIOCHEMICAL

AEB Fermoale AY3 - 500g

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Top-fermenting yeast strain for brewing English-, American- and Belgian-style ales.

A versatile English ale strain with fast fermentation and high flocculation. Malt leads on the palate, with rich biscuit and soft caramel notes and a little citrus for balance. Esters are low and phenolic character is negative, so it ferments clean across pale ales, brown ales, and porters.

Compare to Fermentis Safale S-04.

Best For

Best For English, American & Belgian Ales

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

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English Ales & Bitters

Built for English pale ales, bitters, and ESBs, where malt leads with rich biscuit and soft caramel notes and a touch of citrus for balance.

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Brown Ales & Porters

A malt-forward strain that keeps darker ales rich and rounded, with low esters and low sulfur so the grain bill stays in front.

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House Ale Programs

One versatile dry ale strain that covers English, American, and Belgian-style ales, from pale ales to porters.

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Bright Beer, Fast Turns

Fast fermentation and high flocculation help beer finish on schedule and clear well at the end of fermentation, with a published 12% ABV tolerance for stronger ales.

Technical Specs

Quick Brewing Specifications

Yeast Type Ale / Top Fermenting
Species Saccharomyces cerevisiae
Origin Whitbread & Co. Ltd, London, UK
Attenuation 75–83% | High
Fermentation Temp 61–73°F | 16–23°C
Flocculation High
Alcohol Tolerance 12% ABV
Ester Profile Low
Sulfur Low
STA-1 Status Negative

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

Blonde Ale Build

An easy-drinking Blonde Ale build — pale, clean, and lightly malty, with soft hop balance and neutral ale fermentation built for wide appeal.

View Build

Technical Resources

Documents & Product Support

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

TDS
TDS

AY3 Technical Data Sheet

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

View TDS
SDS
SDS

AY3 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.
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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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