At first soak the dal in water for an hour & then make a paste of it.
Now in a mixing bowl, combine all the dry ingredients ragi flour, wheat flour, chocolate powder, baking powder, baking soda, pinch of salt, jaggery powder & milk powder.Mix it well.
In another bowl combine dal paste, oil, milkmaid, white vinegar & vanilla essence. Mix it to the flour mixture.Add milk & make a smooth paste of it.
Chop some cashew nuts. Add chopped cashew nuts & soaked raisin to the cake mixture.
Now put salt & one stand in a kadhai .Cover it & preheat it in medium heat for 10 minutes.
Grease a cake tin with butter & sprinkle flour in it.
Pour the cake batter in cake tin & place it in kadhai.
Cover it & bake it for 5 minutes in high flame.After 5 minutes, open the lid & decorate the top of the cake with some cashew nuts & raisin & close the lids.Then in low flame bake it for 45 to 50 minutes more.
After that insert a toothpick & check.If the toothpick is clear then cake is ready.If not then bake it for 5 to 10 minutes more.
Very healthy, tasty cake is ready now.