Mix the eggs and sugar well. Add the hot milk. Mix the flour and baking powder separately and then add them to the mixture.
Bake in a moderate oven for 45 min. Take it out and wait for it to cool.
Then pour on 2 1/2 cups of cold milk.
Beat the cream well and smear it on the cake. Finally, use a pastry bag with the liquid chocolate to form the rivers of glaze.