Take bowl add eggs and oil batter it well.
Add wholewheat and spriggourmet essence also.
Then devide it into two part.
Now take a cake mould grease it with ghee or butter.
Add white batter then add chocolate batter
Little bit mix it.
Keep it in a kodai for 20 minutes with low flame.
Now it's time to serve wholewheat marbel cake.