1/2 cup cocoa powder
1 cup sugar
1/2 cup water
1/4 teaspoon salt
1 teaspoon vanilla extract
2 tablespoons butter
Combine cocoa powder, sugar, water, and salt in a saucepan
Cook over medium heat, stirring constantly
Bring to a gentle simmer
Simmer for 2 to 3 minutes until smooth and slightly thickened
Remove from heat
Stir in vanilla extract and butter
Let cool slightly before serving
Store in a sealed container in the refrigerator