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.
Youngs Ale Yeast is a customary example of a traditional top fermenting English Ale yeast and is used throughout the country in commercial breweries as well as by home brewers. The pure single strain culture has several outstanding characteristics such as it’s high temperature tolerance, high alcohol tolerance, relatively low risk of bacterial contamination and outstanding sedimentation characteristics, making it a consistently popular option, delivering reliable top quality Ale’s. You can expect a full bodied, fruity Ale with a hoppy, estery nose and palate. When using this yeast you can look forward to a high final gravity that delivers additional body, weight and a fuller flavour to competitor yeasts. Young’s Ale yeast can be sensitive to variations in fermentation temperature but where constant temperature is used it is a forceful strain with very strong fermentation and moderate attenuation properties.
Alcohol Tolerance: 9.5% v/v
Viable cell count > 5.0 x 10 CFU/gram
Wild yeast: 1 per millin
During yeast manufacture, special processs are employed to promote very high leveles of the natural compound – Trehalose within the yeast.
Trehalose is a natural sugar produced within the yeast cells to protect itself during prolonged storage and stress conditions.
The very high levels of trehalose acheieved also remove the need for re-hydration before adding to must or wort – there is now no advantage in doing this even for high alcohol wines.
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.
Alcohol tolerance: 15% v/v
SO tolerance: High
Low production of urea
Low production of fusel oils
Viability: >1.0x 10 CFU/g