VINTNER'S HARVEST YEAST - AW4
Saccharomyces Cerevisiae â€“ The â€˜only strainâ€™ forÂ Germanic aromatic white wines.
AW4 is noted for developing powerfully fragrant, full spiceÂ aromatic wines and is a perfect match for Gewurztraminer and alsoÂ recommended for Sauvignon and Semillon where the OenologistÂ requires a positive aromatic esters contribution from the yeast.
AW4 is a good fermenter across the range 14 to 30ÂºC (57Â -86ÂºF), lowÂ foam formation and medium to high glycerol. It will ferment up toÂ 14.5% abv. ethanol providing the temperature is held within theÂ 20 - 25ÂºC (68Â -77ÂºF) range and the pH is above 3.0.