Vintners Best Chardonnay Wine Base is a blend of juice concentrates, corn syrup, citric acid and natural flavor designed to make a fermentable base for chardonnay wine blend at 18.9 Brix. The product is blended, pasteurized and stored at ambient temperature. Diammonium phosphate is added as a yeast nutrient. 5 Gallon chardonnay wine recipe and winemaking instructions are included.