Bring the milk to a boil and simmer till it is half reduced. Add the chopped nuts, sugar and cardamom powder. Simmer till the sugar dissolves.
Now and the idiyappam and mix well. Simmer for 1-2 minutes and switch off the flame. Add the rose water and set aside to cool down.
Refrigerate for an hour. Garnish with some chopped nuts, raisins and saffron and serve this yummy dessert chilled.