Line silicone cupcake moulds with paper cupcake cases.
Combine broken chocolate, cocoa powder and water in a saucepan and heat of low heat until the chocolate has melted and is smooth.
Transfer the mixture to a bowl and allow to cool for 15minutes.
To this mixture add the butter, sugar, eggs, vanilla essence, sour cream and sifted dry ingredients and beat on low speed with an electric mixer until combined. Increase speed to medium and beat for 3 minutes or until the mixture is smooth and lighter in colour.
Pour 80ml (1/3cup) into each cupcake case. This will make 12 cupcakes.
Bake for 30 minutes
Recipe by Shades of Cinnamon at https://www.shadesofcinnamon.com/chocolate-cupcakes/