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FERMOALE AY4 – a versatile brewing yeast for the production of American & English style Ales (eg. APA, IPA, Imperial / Double IPA, Stout, Porter, Brown Ale, and high-gravity styles like barley wine and imperial ales) with a clean, balanced flavour and aromatic profile.  This yeast allows the flavours and aromas of the raw ingredients to shine through in the finished beers.

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Product Description


  • FERMOALE AY4 has been specifically bred for the fermentation and production of Pale ales, IPA, stouts, porters, and other specialty beers with a clean, balanced flavour and aroma profile and very low diacetyl levels.
  • Originated in the USA and is used in numerous breweries and microbreweries across the continent.
  • Fermentation time is about 4 to 5 days at a temperature of 20°C.
  • Fermentation yield is high with a good flocculation.

Aroma: Neutral and balanced

Flocculation: High

Attenuation: High

Fermentation Range: 18 – 25°C

Pitching Rate:

  • 60 to 80 g/hL for wort between 12°P and 14°P
  • 80 to 100 g/hL for wort between 15°P and 18°P

Additional Information

Weight 1.1 lbs
Dimensions 4 × 2 × 6 in
Packaging Size

Product Documents


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