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Brewing Yeast

Yeast is the living organism that converts sugars into alcohol and carbon dioxide during fermentation. Different yeast strains produce different flavors, aromas, and alcohol tolerance levels, making yeast selection crucial for beer style and character.

Showing 61 to 80 of 315 yeast strains.

GigaYeast

GB144 Sweet Flemish Brett

Brettanomyces bruxellensis sp. (Probable) Produces a sweet, slightly fruity profile with just a hint of barnyard and spicy phenolics. Brew with GB144 on it’s own to make an all brett beer, in a primary fermentation with an ale yeast for a complex blended profile or in a secondary to add character during aging.

  • Type: Other
  • Medium: Liquid

GigaYeast

GB150 Sour Cherry Funk

Blend of 3 Brett strains and Lactic Acid Bacteria. Creates a tart beer with cherry esters and complex flavors. This blend creates an amazing complex, sour beer with fruity cherry esters. Fermenting in the presence of 7-10 IBUs will cause the fermentation to complete much more quickly but will slow the souring — expect to wait 3-4 months for significant souring. Fermenting with zero or less than 5 IBUs will allow souring to happen much faster (within two weeks) but will cause the fermentation to take up to 4 weeks to complete.

  • Type: Other
  • Medium: Liquid

GigaYeast

GB156 Brux Blend

A blend of Brettanomyces strains. A blend of Brettanomyces yeast that produces stone fruit esters and a hint of barnyard. Creates a moderate amount of acid that adds a tart complexity to the brew. This blend is highly attenuative if left for long periods of time but ferments more slowly than a typical ale yeast. Use GB156 in a primary if fermented for 2-3 weeks or for conditioning a fermented beer during aging. This blend is highly attenuative but tends to ferment about ½ as fast as a typical ale strain.

  • Type: Other
  • Medium: Liquid

GigaYeast

GY001 NorCal Ale One

Clean Fermenting, versatile strain from one of the most famous California Pale Ales. Neutral flavor profile creates a crisp beer and allows hops to shine. Strong attenuator and good flocculation perfectly suited for a large variety of styles. Good choice for high gravity beers.

  • Medium: Liquid

GigaYeast

GY002 Czech Pilsner

Bottom fermenting yeast from a world famous Czech pilsner. Produces a dry, clean beer. Perfect for pilsner and other lager styles. This yeast is flocculent and produces a very clear beer. Robust attenuation in beer up to 16-17˚ Plato. Moderate to poor attenuation in very high gravity beers (over 20˚ Plato).

  • Type: Lager
  • Medium: Liquid

GigaYeast

GY003 Achouffe Belgian Ale

Abbey style yeast from the Belgian Ardennes. Produces aromatic, spicy clove-like notes and less fruity aromas than GY014. Moderately flocculant yeast that creates a slightly clearer beer than most Belgians.

  • Medium: Liquid

GigaYeast

GY005 Golden Gate Lager

Lager yeast used to create the California Common beer style. Ferments unusually high for a lager strain and still retains a lager sensibility (up to 68˚F). This yeast leaves a slightly sweeter beer than our other lager yeast— perfect for creating a subtle, malty undertone against a clean lager background. Creates a moderate amount of sulfide under some conditions that will dissipate with a short rest. Fermentations at traditional lager temperatures may be slow. Recommended 55˚- 68˚F.

  • Type: Lager
  • Medium: Liquid

GigaYeast

GY007 Belgian Mix

A blend of Trappist Ale Yeast combine to create robust attenuation and a complex flavor profile. Spicy and fruity, this blend is slightly more flocculent than many Belgians. Good choice for High Gravity beers.

  • Medium: Liquid

GigaYeast

GY011 British Ale Yeast One

Versatile house strain from a traditional UK brewery. Strong attenuation over a broad temperature range and low esters make this yeast perfect for a wide variety of styles. GY011 is a strong flocculator that creates a clear beer.

  • Medium: Liquid

GigaYeast

GY014 Scourmont Abbey Ale

Classic Belgian yeast from one of the best known Trappist breweries. A fragrant yeast that produces delicious fruity aroma. Good choice for high gravity beers. Generally, the warmer this yeast is fermented the higher the level of fruit aromas produced.

  • Medium: Liquid

GigaYeast

GY015 Trappist Tripel

Trappist Ale yeast from the mother of all Tripels. A balance of fruit and spice with a good malty finish provides a perfect complement for Belgian Ales, Dubbels and Tripels. Attenuation is on the slow side leaving more residual sweetness than our other Belgians. Less esters and phenolics than GY003 and GY014.

  • Medium: Liquid

GigaYeast

GY016 Altstadt Ale

An ale yeast that ferments at cold temperatures and produces a lager like ale style with a hint of fruity esters. Leaves a slight residual maltiness perfect for traditional Kölsch and Alt styles.

  • Medium: Liquid

GigaYeast

GY017 Bavarian Hefe

A traditional hefe yeast from one of Bavaria’s oldest breweries. Robust attenuator that works over a broad range of temperatures and produces the classic banana and clove notes of the German wheat beer style. Moderate sulfide producer (will dissipate with conditioning).

  • Medium: Liquid

GigaYeast

GY018 Saison One

Traditional Saison yeast from a French craft brewery. Produces fragrant beer with pepper and fruit notes. Warmer fermentations create more intense flavors. Perfect for accentuating citrus and fruit flavors. High attenuation rates make a dryer beer than Saison #2.

  • Medium: Liquid

GigaYeast

GY020 Portland Hefe

Used to make a famous American Wheat Beer. Creates a clean tasting crisp brew with just a hint of banana and spice. Very low flocculation means a hazy beer true to the hefe style.

  • Medium: Liquid

GigaYeast

GY021 Kölsch Bier

From one of the oldest Kölsch breweries in Köln. Fermenting under 65˚F produces a very clean, crisp beer with a touch of ester. Perfect for Kölsch or any style where a dry, clean profile is desired. GY021 produces a moderate amount of sulfide that will dissipate completely.

  • Medium: Liquid

GigaYeast

GY027 Saison Two

From a traditional farmhouse Saison. Creates the fruity/spicy aroma traditional to the style. Warmer fermentation temps result in more intense flavor. Produces a tartness not found in most of our yeast and a slightly sweeter beer than GY018 (Saison #1).

  • Medium: Liquid

GigaYeast

GY028 Belgian Wit

Traditional Belgian Wit yeast from one of the classic producers of the style. Creates a delicious spicy nose and a somewhat tart beer. Attenuates dry and leaves a slightly cloudy beer— very low flocculation.

  • Medium: Liquid

GigaYeast

GY029 NorCal Ale Five

More flocculent and less attenuative than GY001. Ferments more slowly and leaves a clear beer with residual sweetness and a slight fruity nose. Excellent for full bodied, malt forward beers.

  • Medium: Liquid

GigaYeast

GY030 American Lager

Think you don’t like American Lager? Think again. This yeast is a powerful attenuator that creates a dry lager with a slightly fruity finish and very little sulfide and diacetyl. Perfect for lager styles where you desire a dry, less malty finish.

  • Type: Lager
  • Medium: Liquid

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