Mix everything except the mango pcs in a bowl. Now brush the container in which you want to steam with some ghee. Add the mixture. Cover it with either an aluminium foil or use a container with a tight lid. Now take a vessel with a lid add water to it. Now place the vessel with the curd mixture into it. Now cover the main. Vessel with a lid. Let it cook in low flame for at least 20-25 min. Let it cool. Put it in the fridge. Garnish it with mango pcs before serving.