Zubereitung

1. 1

   Preheat the oven to 175 C and line a square tin with baking paper. Melt the chocolate and butter over a water bath and let it cool slightly.

2. 2

   Beat the eggs with the sugar and salt for several minutes until pale and foamy. Stir in the lukewarm chocolate mixture.

3. 3

   Sift the flour and cocoa over the top and fold in just briefly. Fold through the roughly chopped walnuts and spread the batter into the tin.

4. 4

   Bake until the surface is matte and cracked but the centre stays soft. Let cool completely before cutting into squares.