Measure out 2 cups of heavy whipping cream into a medium size saucepan and turn it onto medium heat.
While it is heating up, measure 2 teaspoons of the unflavored gelatin into a small bowl and add 2 tablespoons of water to the granules.
Finely chop the dark chocolate. Measure out the sugar, a dash of salt and the dark cocoa powder into a bowl and toss it together.
When the heavy cream begins to steam and bubble on the sides of the pan, remove it from the heat. Do Not Boil!
Immediately add the chopped chocolate, sugar, cocoa powder and salt and whisk it together until everything is melted and smooth.
Add the vanilla and stir.
By this time the gelatin granules will be in a semi-solid state. Add them to the hot cream and chocolate mixture and whisk it together until all the gelatin granules are dissolved and the mixture is completely smooth.
Pour the panna cotta mixture into 4 ramekins and let it cool on the counter for 20-30 minutes before covering them with plastic and chilling them in the fridge.
Let them sit in the fridge for at least 4 hours before serving. Enjoy!