In a heavy bottomed pan bring milk to boil.
Once it starts boiling, reduce flame to low and keep on stirring until it is reduced to 1/3 rd.
Add sugar, saffron strands and cardamom powder. The milk will start getting thin as the sugar melts.
Keep on boiling at low flame until it becomes thick again.
Add the pistachios and boil for one more minute.
Remove from flame and allow it to cool.
Mix the cream and divide it between three or four mud pots and cover with cling film.
Freeze for 4-5 hours.
Enjoy!!