Powder sugar and cardomom separately. In a heavy - bottomed pan, melt vanaspati / butter gradually on medium low fire. Add the flours and keep stirring till it turns light brown. Remove from fire and allow to cool. Mix powdered sugar and cardomom as well as finely chopped pista. Take 1 / 3 cup of this mixture, press between your palms and roll around untill it becomes a firm ball. Serve as a dessert.