In a mixing bowl beat two eggs for 30 seconds.
Add vanilla essence and sugar. Beat again for 2 minutes.
Sieve all-purpose flour, cocoa powder, baking powder, and baking soda together in the bowl to make the cake batter. Beat for a few more seconds until combined.
Combine butter and milk in a cooking pan. Bring it to a boil. When done, turn off the flame and let it cool down for a minute.
Combine the buttermilk with the cake batter.
Grease a medium sized loaf pan and fill it with cake batter. Tap it to distribute evenly.
Bake in preheated oven at 170 degrees centigrade for about 40 minutes.
Transfer to a kitchen pad and let it cool down, then run a knife around the edge of the pan and turn the cake out onto a plate.
Cut the cake into slices using thin sharp knife.
