In a medium pot, whisk together Nutella and sugar.

Cook over medium heat, slowly adding the cream. Gently whisk until everything has combined into a smooth mixture.

Continue heating, whisking frequently, until it starts to simmer. Remove from the heat, allow to cool down to room temperature.

Once the mixture has cooled, whisk in the vodka until well combined. Taste, add more vodka if you so desire.

Keep in the fridge for up to three weeks.