For the cake;
Beat eggs till nice and fluffy add in vanilla essence and gradually add in sugar, beating well. Heat the water and add in cocoa . Fold in the cocoa mixture and oil into batter. Sift flour and baking powder and add to your batter and beat for a minutues or so till well mixed.
Pour into your cake pan and bake at 180 till done
Beat all the sauce ingredients well and pour over cake