Mix the flour, salt, baking powder and sugar

Add in milk, vegetable oil, vanilla essence, mix to form the cake batter

Divide the batter into two. Pour the cocoa powder in one of the bowl and mix well to form the chocolate batter

In a wide mug or small bowl, add two tablespoons of the chocolate batter to the bottom

Then add two tablespoons of the white batter on top of the chocolate batter

Keep alternating adding the cake batter until both the white and chocolate batter are finished

Set your microwave at 4 minutes but check at the 3 minutes mark, whether it us done

Enjoy immediately