In a saucepan, combine the sugar, coffee, and cocoa powder. Whisk until smooth. Bring to a boil and boil for 3 minutes. Simmer for a longer time if you desire a thicker syrup.
Remove the pan from the heat and whisk in the salt. Allow to cool completely.
Notes
Store in an airtight container in the refrigerator for up to a week.Nutritional values are approximate and based on 1 ounce.Decaf coffee is recommended.