Preheat oven to 170 degrees. Put parchment paper in a 20 x 20 cm brownie pan, with it hanging out of all corners. Grease it well.

Using a brain-marie, melt the dark chocolate. Allow to cool a bit.

Add the lukewarm water and mix well.

Slowly add in the icing sugar and mix well till the sugar is dissolved.

Break in an egg at a time and whisk vigorously till well mixed.

Finally add the flour and give a final mix. The batter will be kind of flowy.

Pour in to the prepared pan and bake for 30 to 40 minutes till cracks appear on the surface - I baked for 40 minutes. Allow to cool completely in the pan.

Pull out carefully using the parchment paper and cut into 9 squares using a sharp knife.