Bring milk to boil in a heavy bottom pot with saffron. Keep stirring it frequently to avoid burning of milk at the bottom of the pot.
Mix 3 tbsp (use 2 tbsp for a little thin consistency) of custard powder with ¼ cup of milk to make a smooth paste.
Once milk comes to boil, bring the heat down, slowly pour the smooth custard mix (stir it well before adding) in the milk while mixing constantly.
Add sugar and cardamom powder. Mix well, let it boil for 10-12 minutes while stirring frequently.
Turn the heat off and let it cool down completely. You will see a layer of malai (milk fats) on top, you can either mix it well in the milk or discard. I like to mix it in the milk for great texture! Milk will keep on thickening as it cools down.
Once cooled down, add peeled/chopped fresh fruits and slivered nuts. Mix well.
Refrigerate for few hours before serving. It will keep on thickening as it cools down. Serve it cold with side of puri and bataka wada!!