Add all the chocolate syrup ingredients and cook on low flame until little bubbles arrived in it.
Take all dry ingredients in a plate that is maida, cocoa powder, baking powder and soda mix these all with a spoon. In a bowl, add dahi and sugar and mix it well.
Now add oil, vanilla essence and chocolate syrup and mix it well.
Now, add all dry ingredients in the mixture and add Raisin (kishmish) and mix it very well into a smooth paste.
Take a cooker put in on low flame and remove whistle of it. Put a stand inside the cooker and now, take aluminum utensil that can go easily inside cooker.
Take utensil grease it with oil and then dust it with Maida.
Now, add the mixture in the utensil and put the utensil inside the cooker and close the cooker and keep the flame on low.
Bake the Cake till 40 minutes. After 40 minutes close the flame and take the cake out from cooker and let it cool completely.