The 500g Yeast Nutrient from Youngs is essentially a fuel for the yeast, allowing it to grow properly, aiding a healthy, successful brew. This nutrient will ensure a rapid and complete fermentation process. This chemical is ideal for adding to hedgerow, fruit or flower wines to help the fermentation process along. Yeast Nutrient Features Youngs Yeast Nutrient 500grm Tub/ 4102 Rapid and complete fermentation process Ideal for hedgerow, fruit or flower wine Contains: Diammonium Phosphate, Ammonium Sulphate Youngs\' Ref. MPN: 4102Colour: N/ASizes: 500gPM Ref: 860783