Here's how to make a Persimmon Old Fashioned. 1 tablespoon Persimmon and Cranberry simple syrup* 1 ½ ounces bourbon Garnish with a slice of persimmon and two cranberries *To make persimmon and cranberry simple syrup in a small sauce pan add 1 cup water, 1 cup sugar, ½ cup fresh cranberries, and 1 sliced persimmon and bring to a boil. Once fruit is warm crush the persimmon and cranberries. Strain the mixture and use the syrup once cooled. ** A faster way to do this is to place t 1 teaspoon of sugar, 3 shakes of cranberry bitters and 2 slices of persimmon into a low ball glass and muddle.