Combine 1.5 cups of 99% isopropyl alcohol and 1/2 cup of 70% isopropyl alcohol are mixed it will make a 91.75% mixture. Then shake the SuperSauce Concentrate and add 4 tablespoons to the alcohol mixture. It seems to work properly. This makes 16 ounces or 2 cups of SuperSauce Solution. Also check Amazon in your county.
A second work-around is to make SuperSauce solution with 9 tablespoons of 99% alcohol, 1 tablespoon distilled water, and 1 tablespoon SuperSauce concentrate.