Method:
Put the milk in a heavy bottom pan.
Heat till it comes to a boil.
Take 2 tbsp milk from it in a bowl.
Add saffron and keep aside.
Simmer the heat and let the milk thicken for almost 2 hours.
Keep stirring in between.
When the milk is reduced to ⅓ rd, add saffron soaked in milk, cardamom powder and sugar.
Cook for another 2-3 minutes.
Remove from heat and cool completely.
Add mango puree and mix well.
Chill for a few hours before serving..