Yeast Nutrient Fermax - A balanced blend of minerals, proteins, amino acids and vitamins to improve yeast activity during fermentation. Improves attenuation and speed of fermentation. Contains diammonium phosphate, dipotassium phosphate, magnesium sulfate and autolyzed yeast. Great for all beer and winemaking. For beer: Use 1 tsp per gallon in last 10 minutes of boil. For Wine add 1 tsp prior to fermentation. For either process, be sure to add Prior to Pitching Yeast.