Mangrove Jack’s AW4 wine yeast 8 g

The Mangrove Jack’s AW4 yeast is an oenological strain specifically designed to reveal and enhance the aromatic character of white and rosé wines. Thanks to its strong ester production, it delivers intense fruity and spicy notes, boosting varietal expression and enriching the wine’s bouquet.

Its moderate fermentation rate and robustness make it a reliable yeast, capable of performing under difficult conditions. With a tolerance of up to 14% ABV, it produces dry, fragrant wines with a slightly enhanced body due to moderate glycerol production.

Why choose this product?

• Ideal for aromatic white and rosé wines: Riesling, Sauvignon Blanc, Gewurztraminer, Sémillon…
• High ester production: powerful fruity and spicy aromas.
• Enhances varietal expression: perfect for complementing or reinforcing the grape’s natural bouquet.

Technical specifications

• Strain: Saccharomyces cerevisiae
• Weight: 8 g (sachet)
• Aromatic profile: highly aromatic (fruity and spicy esters)
• Glycerol production: moderate
• Nitrogen requirement: low
• Optimal pH range: 3.0–6.0
• Fermentation temperature: 16–24 °C
• Ideal temperature: 20 °C
• Alcohol tolerance: 14% ABV
• Killer factor: positive
• Form: active dry yeast
• Packaging: 8 g sachet
• Dimensions: 7 × 0.5 × 10 cm
• Total weight: 10.20 g

Product contents

• 8 g sachet of AW4 active dry yeast

Technical Tips

• Add the yeast directly to the must: no rehydration required.
• To maximise aromatic esters, ferment between 18 and 20 °C.
• Ideal for aromatic grape varieties: Riesling, Sauvignon Blanc, Gewurztraminer.
• Store the sachet in a cool, dry place to maintain viability.

Product FAQ

• Which wines is AW4 suitable for?
  Aromatic white and rosé wines, including Riesling, Sauvignon Blanc, Gewurztraminer and Sémillon.
• Should the yeast be rehydrated?
  No, it can be added directly to the must.
• What is its aromatic impact?
  Strong: intense fruity and spicy ester production.
• Can it ferment high‑alcohol wines?
  It tolerates up to 14% ABV.