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Saccharomyces Cerevisiae – The ‘only strain’ for Germanic aromatic white wines.
AW4 is noted for developing powerfully fragrant, full spice aromatic wines and is a perfect match for Gewurztraminer and also recommended for Sauvignon and Semillon where the Oenologist requires a positive aromatic esters contribution from the yeast.
AW4 is a good fermenter across the range 14 to 30ºC (57 -86ºF), low foam formation and medium to high glycerol. It will ferment up to 14.5% abv. ethanol providing the temperature is held within the 20 – 25ºC (68 -77ºF) range and the pH is above 3.0
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Young’s Re-start Wine Yeast is the perfect strain for completing fermentations that are sluggish or have completely stopped. This yeast has the capabilities to kick start and dominate the fermentation, fermenting to dryness up to a possible 18% ABV. This innovative, fermentation-friendly yeast will start work quickly and produce low foam overcoming difficult fermentation conditions and delivering a consistently clean and fresh tasting wine. This strong, forceful strain is suitable for use with any red, white or rose wine it is easily handled and confers very neutral flavour and aroma characteristics. Due to it’s rapid re-activation properties it will avoid negative wine influencers such as excessive SO production, colour oxidation and flavour loss commonly associated with sluggish fermentations.
Technical Information
Gluten Free
Alcohol tolerance: 18% v/v
SO tolerance: High
Foaming: Low
Low production of fusel oils
Saccharomyces Cerevisiae – Ideally suited for rich, full bodied red wines with exceptional flavour complexity.
Noted for exceptional depth and flavour complexity, R56 exhibits complex aromatics during fermentation conferring an old world quality which one might only expect from natural flora multiple strain fermentations.
Unusually for complex aromatic strains, R56 still respects the varietal character of the fruit and confers good structure and balance. R56 is also a high glycerol producing strain.
R56 is a medium rate fermenter with optimal temperature between 22 to 30ºC (72 -86ºF) which will ferment to 13.5% abv. ethanol.
his strain is known for it’s exceptional reliability and it’s ability to consistently deliver fresh, clean, crisp and robust ciders. It is a very low foaming strain that will ferment between 10 – 35°C, adhering to the ideal fermentation for cider; measured and steady. The flavour characteristics confered by this strain are neutral and clean meaning that the natural flavour of the fruit will be the prominant taste on the palate, guaranteeing a satisfying, well balanced cider. Overall, a classic cider yeast that will ferment to dryness with a delicious, powerful and refreshing fruity finish, perfect for making your own traditional European cider.
Technical Information
Gluten Free
Alcohol tolerance: 15% v/v
SO tolerance: High
Foaming: Low
Low production of urea
Low production of fusel oils
Viability: >1.0x 10 CFU/g
Saccharomyces Bayanus – Very good all round strain, best choice for high alcohol and fortified wines but also excellent for most country wines, sweet sparkling wines and ciders.
If you only had one wine yeast strain, this would be the strain because whilst being relatively neutral in character SN9 does introduce excellent weight and structure no matter the must or fruit and produces a congener profile that always compliments the wine.
SN9 is particularly good when fermenting flower or low fruit recipes which often lack vinosity, weight and depth.
SN9 is another strain noted for its robustness, being able to ferment to 18% abv. ethanol, tolerate high free SO2 and high levels of other stress factors such as organic acids, incorrect temperature and pH. But unlike CL23, SN9 adds weight and high glycerol production making the strain perfect for high alcohol sweet wines or where uncertain recipes are employed and fermentation reliability is a key factor or where low temperature fermentation down to 10OC (50OF) is required.
This strain is ‘fermentation friendly’ in that it produces zero foam, starts fermenting rapidly so avoids potential bacterial contamination and can be used to re-start stuck fermentations. SN9 is also the most osmotolerant and the fasting clearing of all Vintner’s Harvest strains.
SN9 is ideal for restarting stuck fermentations.