Wyeast nutrient is a blend of vitamins, minerals, inorganic nitrogen, organic nitrogen, zinc, phosphates and other trace elements that will benefit yeast growth and complete fermentation. Additional nutrients are most valuable during yeast propagation and sluggish or stuck fermentations.
Supplementing with nutrients will reduce lag time, improve viability and provide consistent attenuation rates. Use ½ tsp. for 5 gallons of wort or must. Wine makers dissolve Wyeast Nutrient in warm water prior to adding to juice or must. Brewers dissolve Wyeast Nutrient in warm water. Add solution to kettle 10-15 minutes prior to end of boil. Add 1/8 tsp. per pint for starters.