First grease the baking tin

Preheat your oven to 200 degree

Seive the flour, cocoa powder, salt, baking soda

In another bowl add melted butter/oil and add sugar mix it properly

Now add vanilla essence

Add the sieved dry ingredients to the wet mixture mix it properly

There should be Ni lumbs in cake batter

Pour the cake batter in the cake tin and bake it 35 to 40 minute in convention mode