A person put butter in a pot, then add sugar and milk and warm it in a water bath.  Then, the person put flour, baking power and cocoa power in a big bowl, then filter the mix in a sieve.  After, the person beat two eggs and add the solids ingredients and mix.  Next, the person pour the mixture in a cake tray and close with aluminum paper, and then cook it in a covered water bath.  When the cake is done, the person covers it with a mix made of condensed milk, cocoa power and oil.