FERMOALE AY4

Very versatile yeast of American origin for the production of American and English ales (e.g. APA, IPA, Imperial / Double IPA, Imperial Stout, Imperial Porter, Brown Ale, American Barley Wine etc.). It has an excellent fermentation capacity, a high fermentation speed and a medium flocculation. FERMOALE AY4 develops a neutral and pure aroma profile with very low diacetyl values.

Aroma and flavor characteristics:

Delivers light malty flavour notes with a touch of citrus. Esters are mild to give a balanced and clean, neutral finish.

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Allergen-free

GMO free

Specifications
Remarks
Use
Other

Specifications

Parameter	Minimum	Maximum	Unit
Apparent attenuation	84		%
Fermentation temperature (°C)	16	23	°C
Fermentation temperature (°F)	61	73	°F
Flocculation	Low
Alcohol tolerance	10	11	% ABV
Total esters	Low
H2S (sulphur notes)	Low
POF (phenolic notes)	Negative
STA-1	Negative

Remarks

Use

It is generally recommended that active dry yeast is pitched directly into the wort without prior rehydration. If direct pitching is not feasible the yeast can be hydrated and pitched in liquid form. To rehydrate dissolve the dry yeast in sterile water or in wort at 16-23°C / 61-73°F at a ratio of 1:10. Stir gently and leave for approximately 20 minutes. Gently stir again and add to the cooled wort in the fermenter. To avoid yeast stress, ensure temperature fluctuations are minimal.