Whisk together the water and maple syrup in a medium-size saucepan, over medium-high heat. Bring the mixture to a boil. Once boiling, reduce the heat to medium-low.
Whisk the cocoa powder into the mixture until the powder is fully blended. Simmer for 2 minutes.
Remove the hot fudge from the heat. Stir in the vanilla extract and pinch of salt. Enjoy!