Preheat oven to 180 degree C.
Line a baking pan with parchment paper and set aside.
Mix flour, cocoa powder, baking soda, salt and sugar in a bowl.
Add in oil, water, vanilla and fold gently.
Spoon this into parchment lined pan and bake for 30 to 35 mins.
Remove and cool completely.
Unmould and slice into half. Remove the dome of the cake and make it even.
Mix sugar and water in a bowl. Now brush the cake with this syrup all over it.
Take the whipped cream.
Take the cake, brush top with syrup. Decorate with the cream.
Cover entire cake with the cream.
Crumble the cake and decorate it all over the cake.
Chill the cake for few hours.
Slice and serve.