Vintner's Best Hibiscus Wine Base is a blend of hibiscus and other juice concentrates, corn syrup, citric acid, and natural flavor designed to make a fermentable base for hibiscus wine blend at 18.9 Brix. The product is blended, pasteurized and can be stored at ambient temperature. Diammonium phosphate is added as a yeast nutrient. 5 Gallon Hibiscus wine recipe with instructions is included.