Keep the yogurt on a muslin cloth on top of a deep bowl.
Close the bowl and keep it overnight in the fridge for the whey to drain.
Heat the milk in the microwave for 40 seconds. Put the saffron strands in it and allow it to seep for a minimum of an hour.
In a mixing bowl, add the drained yogurt, the saffron infused milk, sugar and cardamom powder and whisk well till combined.
Serve in bowls, sprinkled with chopped pistachios!