In a mixer jar, add oreo biscuits and powdered sugar and grind them thoroughly.

On the other hand, in a kadhaai, add ½kg salt and cover the kadhaai with a plate. Heat it on 10mins.

Take out the powdered biscuits in a bowl and add some milk and butter and mix it thoroughly until you get a soft batter. Now add baking soda and a little milk again and mix it again.

Now, in a cake tin, spread the butter paper and grease it's bottom and sides properly with some ghee/oil/butter and pour the batter into it. If you don't have cake tin or butter paper, then you can use any steel utensil to bake the cake and just grease the bottom surface and the sides with some oil, butter or ghee

Now, very carefully, place a stand or a katori in the center of the kadhaai and place the cake tin/steel utensil on it and cover the kadhaai. Keep the flame on high. Bake the cake for 25mins-30mins; the cake will start to rise.

Keep checking your cake in between. In order to know how the cake is cooked from inside, you can insert a toothpick in the inner and outer areas of the cake. If the toothpick comes out clean, then it means that your cake is cooked and you can turn off the flame.

Let it rest for about 15-20mins then take out the cake in plate and granish it with chocolate shyrup and Oreo biscuit cream