The wine yeast nutrient contains Di-ammonium Phosphate and is nothing more than a nitrogen supplement. It will boost your Free Amino Nitrogen levels 258 ppm when used at a rate of 1tsp per gal. However, yeast nutrient such as the Wyeast Nutrient Blend is a more complete dietary supplement. It a mixture of Di-ammonium Phosphate, vitamins, minerals, and other trace elements.