Sift besan flour and rice powder and mix it. Add salt and chilly powder to it. Rub ghee finely with the soda powder. Add it to the besan-rice mixture. Cut the cashew nuts into 3 or 4 pieces. Mix all the ingredients together with some water except the oil. Make it a thick batter.
Heat oil in a pan. Pour spoon fulls of prepared batter into the oil and fry until golden brown.