+3 Diammonium Phosphate (DAP) 2oz 400000014258 $2.49 In stock Quantity: 1 Add to Bag Product Details Diammonium Phosphate stimulates yeast growth, and is a useful addition to yeast starters and wines lacking in natural nutrients, such as white wines and meads. Some winemakers add it to every fermentation. Use 1/2 to 3/4 gram per gallon. Save this product for later Favorite