Lalvin QA23 Dry Wine Yeast

Article number: 34021
Availability: In stock


Originating from the Vinhos Verde region of Portugal, the QA23 was selected for enhancing the flavors and aromas of grapes utilized in the production of premium white wines. Recommended for styles such as, Chardonnay, Sauvignon blanc, Chenin Blanc, Colombard and Semillon, the QA23 produces fresh, fruity and clean wines by enhancing aromas of the above listed terpenic varietals through beta-glucosidase activity and excellent conversion of thiol. The strain functions as complementary yeast for developing the passion fruit character in Sauvignon Blanc.

The QA23 ® has low nutrient and oxygen requirements and will ferment juice with low turbidity to dryness at low temperatures (10°C). Lalvin QA23 ® is now being used in winemaking in most countries.

Recommended Styles

White - Strongly recommended
Red - Not really recommended
Rosé - May be used
Late harvest - Very recommended


Saccharomyces cerevisiae bayanus
Production of volatile acidity - Low
Production of SO2 - Moderate
MLF Compatibility - Really recommended
Lag phase - Moderate
Foam production - Low foam production
Sensory effect - Enhances Varietal Character
Restart stuck - Not really recommended
Fermentation speed - Fast
Temperature range - 14-28 °C
Competitive factor - Active
Alcohol tolerance - 16
Relative nitrogen needs - Low
H2S production 60ppm - Very low
H2S production 170ppm - Low
Reaction to O2 addition - High
Dosage - 25-40g/hL
Glycerol production - High
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