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Irish Ale Yeast Activator - Wyeast 1084 - 4.25 oz.

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Irish Ale Yeast Activator - Wyeast 1084 - 4.25 oz.

SKU: Y1084

Wyeast 1084 is an ideal ingredient in the production of stouts, porters, wee heavy, ambers and red ales.

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This yeast ferments extremely well in dark roast worts. Beers fermented in the lower temperature range produce dry and crisp beers to fruity beers with a nice compexity in the upper range. Ester production is enhanced with fermentation temperatures above 64F (18 C). Flocculation is low to moderate with filtration typically required.

  • Pure pitchable yeast for brewing
  • Contains 100 billion yeast cells
  • Designed to directly inoculate 5 gallons of wort
  • Contains 125 mls (4.25 oz. or 128 grams) liquid yeast & malt-based nutrient blend

Styles: All Stouts, All Porters, Scottish 60/70/80, Wee Heavy, Amber, Red

Keep refrigerated. Do not freeze.

Details & Instructions

Additional Information

Ideal Temperature Range (°F) 62-72F (16-22 C)
Attenuation (%) 71-75
Flocculation Medium
Alcohol Tolerance (%) 10-11
Profile Ale

5.0 / 5.0
1 Review
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1 Stars
Worked great for a 3 gal BIAB Dry Irish stout. Easy to use. Should probably use a starter for larger batches.
January 26, 2017
1 year ago
Customer Q&A
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Browse 1 question Browse 1 question and 4 answers
Can this be added to some washed, U.S. 5, salvaged from a recent all grain amber, for use in a stout?
A shopper on Jan 5, 2017
BEST ANSWER: If you are going to enter this stout in a competition I would not mix the yeasts. The US 5 attenuates more than the 1084 and the 1084 can add a flavor component depending on fermentation temperature. The judges might notice the stout doesn't adhere to the published style. If you are making this beer for yourself I would go for it. A good experiment.

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