Using Pressure Cooker :
Heat the cooker in a stove or cooking range. Do not pour water in it. Place the cooker dish with holes, at the bottom of the cooker. When the cooker is well heated, place the dish with the cake batter inside, on top of the cooker dish. Close the cooker with the lid. Do not put the weight. Lower the flame after 2 or 3 minutes. It can be switched off after half an hour.
Do not open the lid to test whether the cake is done. Put a skewer through the hole of the weight. If the skewer contains the cake mixture, it is not baked. The mixture will not stick on to it when the cake is done.
Using Thick Bottomed Big Vessel :
Fill 1/2 of a thick bottomed vessel with clean sand and heat the vessel. Turn the contents in the vessel to ensure the sand is heated evenly all over. Make a depression at the middle of the sand. Pour the cake mixture in a vessel and close tightly with a lid. Place the vessel with the cake mixture in the depression. Close the thick bottom vessel. Keep this on a low flame for half an hour.
Varieties of Icing
Beat the ingredients for icing till light and fluffy. Pour this over the prepared cake and bake it before use. Decorate the cake by topping with grated chocolate over the icing.
Butter Icing :
Mix the ingredients finely and spread it over the cake.
Make a batter with the cocoa powder and water. Beat butter and icing sugar. Add the coco mixture in it and beat again. Apply it over and around the cake.