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Red Select is a good fermenter with the ability to enhance colour and mouthfeel in red wines through the extraction of phenolic compounds in the grape juice. Red Select is best suited for varietal winemaking in red grape varietals such as Cabernet Sauvignon, Merlot and Shiraz/Syrah. This yeast is best suited to the production of premium, superpremium and iconic red wines.
- Red Select has a short lag phase with a medium fermentation speed at temperatures of 16-28°C (61-82°F).
- This yeast requires nutrient supplementation to perform at its best; a complex nutrient with a high amino acid content released from such ingredients as inactive yeast is essential.
- Alcohol tolerance of this yeast can reach up to 15-16% v/v.
- Red Select is a low to medium foaming yeast.
Red Select is considered a medium to high nitrogen consumer. While the addition of DAP or ammonia will be beneficial at the start of fermentation to increase yeast biomass, this yeast requires a more complex nutrient addition in order to minimize negative aromas from the wine. It is recommended to add a complex nutrient with high inactive yeast content at approximately 1/3 of fermentation completion.
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