Optional: a splash of espresso or strong coffee for extra punch
Instructions
In a small saucepan, whisk together cocoa powder, sugar, and water. No lumps, please—we’re not making paste here.
Put the pan over medium heat. Stir constantly until the mixture thickens slightly and comes to a gentle simmer. You should hear a soft hiss, not a boil of chaos.
Remove from heat. Stir in vanilla and a pinch of salt. Taste and adjust sweetness if you like it sweeter or darker.
Let it cool a bit, then transfer to a bottle or jar. Keep refrigerated. It thickens a touch in the fridge, so give it a quick shake before using.