1 cup water
1/2 cup sugar
1/2 cup light corn syrup, agave nectar, or glucose
3/4 cup unsweetened cocoa powder (preferably Dutch-processed)
2 ounces bittersweet or semisweet chocolate, finely chopped
1. In a medium saucepan, whisk together the water, sugar, corn syrup (or agave or glucose), and cocoa powder.
2. Bring to a boil over medium heat. Once it’s just begun to simmer and boil, remove from heat and stir in the chopped chocolate until melted.
Serving: You should let the Chocolate Sauce stand for a few hours before serving, which will give it time to thicken a bit.
Storage: Store the chocolate sauce in a covered container in the refrigerator for up to 10 days. Rewarm before serving.