- Bring milk to a boil in a wide non-stick pan, reduce the heat to low, add saffron and mix well. Cook on low heat for 2-3 minutes. Add alum, mix and cook till most of the moisture evaporates and a solid mass remains, stirring continuously. Add sugar and liquid glucose, mix and cook till the mixture thickens. Switch the heat off. Grease a burfi tray with ghee.Transfer the mixture into the greased burfitray and spread it evenly. Sprinkle toasted chopped walnuts, slivered pistachios and dried rose petals. Press it gently. Set aside to cool completely. Cut into squares and gently demould. Serve as required