LalBrew Sourvisiae® 10g

Original price was: $8.38.Current price is: $5.87.

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SKU: 1102660 Categories: , , , Tags: ,


Sourvisiae® is a bioengineered ale yeast strain (Saccharomyces cerevisiae) capable of producing lactic acid during fermentation to provide brewers with an easy, reproducible, and mono-culture product for sour-style beer production.

Sourvisiae® contains a single genetic modification, a lactate dehydrogenase gene from a food microorganism, which enables the yeast to produce high levels of lactic acid, the main compound that gives sour beers their flavor.

Sourvisiae® allows the brewer to ferment and sour the beer in one simple step, reducing cross-contamination risks, lowering costs, cutting total process time, and allowing brewers to obtain a consistent product.

The brewing process is conducted without any modifications; Sourvisiae® is pitched just like conventional yeast and ferments in a normal fermentation time. Sourvisiae® does not produce other flavor compounds associated with Brettanomyces, Lachancea, or Lactic Acid Bacteria, providing a cleaner and more reproducible souring process, with much shorter fermentation times.

  • Flocculation: HIgh
  • Attenuation: 76-82%
  • Temperature Range: 15 – 22°C (59 – 72°F)
  • Alcohol Tolerance: 12%
  • Phenolic: No
  • Diastatic: No
  • Aroma: Tangy, intensely sour, slightly fruity

Technical Data Sheet


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