1 cup granulated sugar
1 cup water
1/2 cup unsweetened cocoa powder
1/4 teaspoon salt
1 teaspoon vanilla extract
Combine sugar, cocoa powder, and salt in a saucepan
Whisk in water until smooth
Place over medium heat
Stir constantly until the mixture begins to simmer
Reduce heat and cook for 2 to 3 minutes, stirring often
Remove from heat
Stir in vanilla extract
Let cool completely
Transfer to a clean jar or bottle
Store in the refrigerator