Add your flour to a bowl

Add cocoa powder also

Add your sugar

Add baking powder in very little small amount

Mix well together with your egg yolk

Add water into your powder milk and mix it

Mix all together and bake your cake

While baking your cake melt your dark chocolate with little bit heat

Slice your cake horizontally and add butter in between the cake

Then pour your melted chocolate at the top of the cake

Slices your cake and taste😋😋😋