Lallemand Sourvisiae Yeast

Lallemand Sourvisiae Yeast is a dry sour ale yeast engineered to produce both lactic acid and alcohol during primary fermentation. Packaged in a 10g sachet for batches up to 5 gallons, it streamlines sour beer production without requiring separate souring bacteria or kettle souring.

This strain features high flocculation, 76–82% attenuation, an alcohol tolerance of 12% ABV, and performs within a recommended fermentation temperature range of 59–72°F (15–22°C). It is designed specifically for brewing clean, balanced sour ales in a single fermentation step.

Lallemand Sourvisiae Yeast is supplied as a dry yeast in a 10g packet designed for batches up to 5 gallons. Its technical characteristics include high flocculation, apparent attenuation of 76–82%, a recommended fermentation temperature range of 59–72°F (15–22°C), and an alcohol tolerance of 12% ABV. It is intended for sour ale production.

For best results, pitch according to the manufacturer's instructions and ferment within the recommended temperature range. Proper fermentation management supports balanced acidity and consistent fermentation performance.

Lallemand Sourvisiae Yeast offers brewers a simplified method for producing sour beers by combining acidification and fermentation into a single controlled process.