In a small sauce pan, combine the water, maple syrup, cacao powder, and salt. Whisk over medium heat until combined and smooth.
Bring to a boil and stir for 2-3 minutes, until slightly thickened. Remove from the heat and stir in the vanilla. Pour into a glass jar and let cool and the place a lid on it and keep it in the fridge. Stir well before using.
Makes 8-10 servings, mix as little or as much as you want with milk of choice.