What is it?
Yeast Nutrient is basically a food for the yeast. It provides nitrogen for essential yeast growth whilst the phosphate ensures a vigorous fermentation.
Why you need yeast nutrient.
Yeast, like all other living cells, needs nitrogen as well as oxygen to enable it to grow and thrive. Fresh fruits generally contain nitrogen, though it is greatly diluted hen the water is added when making the win. For the yeast to grown and create the enzymes needed for the fermentation process of converting the sugars into alcohol, it is always recommended to add some nutrient. This is essential if you want to produce a good sound wine.
What types of nutrient are used?
This yeast nutrient uses an equal blend of di-ammonium phosphate and ammonium sulphate. These are the best nutrients to use as they release the essential nitrogen needed for a healthy fermentation as well as helps with the blending of some of the proteins. The 2 nutrients combined provide a better food for the yeast than just a single type, and help avoid a stuck fermentation.
What is the dose rate?
Yeast nutrient is added at the rate of 1 teaspoon (5g) per 4.5 litres (1 gallon) of wine.