Preheat oven to 360F.

1. Whisk your eggs and then add sugar and continue mixing until fluffy.
2. Sift flour, cocoa and baking powder together.
3. Add water to the egg mixture and then turn off mixer.
4. Add your flour mixture and mix with a whisk until all are combined.
5. Spread on to a 13×9 baking pan and bake for 20 minutes.
6. Cool a bit and then pour your chocolate milk over the baked cake.  Leave to cool completely.

Chocolate cream:

1. Using a double broiler, cook egg yolks with sugar. 
2. Add chocolate chips and mix until melted. Remove from stove to cool.
3. In a bowl, mix your softened butter and add the chocolate mixture, spoon by spoon, mixing well after each addition.
4. In another bowl mix egg whites with powder sugar.
5. Fold this into the chocolate mixture. This is your chocolate cream.
6. Spread the chocolate cream over your cake.
7. Microwave chocolate chips with 4 tablespoons of oil and mix until chips are melted.
8. Pour over the cake. Leave to cool.
9. Once cooled, cut into squares.
10. For additional decoration mix 1 cup of whipping cream with 2 tablespoons of powder sugar and pipe onto each square.  Sprinkle with cocoa for taste.