Method: 1. Beat egg whites until stiff. 2. Add sugar gradually, and beat. 3. Then add in egg yolks, and continue beating. 4. Sift dry ingredients (except coffee and cocoa) and add to above. 5. Mix water, cocoa, coffee and oil, add to batter. 6. Beat in until well incorporated. 7. Bake in preheated oven at 180 °Cup for ± 30-40min in 1 big sheet pan. 8. When done allow to cool whilst making frosting. Mix all frosting ingredients together. 9. Cut cake into even sized squares / rectangles. 10. Pipe frosting ontop and decorate with roasted hazelnuts, choc and toffee sauce.
*and.B: can add roasted chopped hazelnuts in batter too.