Grind the pistachio into coarse powder and keep it aside
In a wide mixing bowl add Whipping Cream, whisk it with a electric mixer for 4- 5 mins till you see firm peaks
Add condensed milk and gently mix till heavy cream and condensed milk are blended together
Add the ground pistachio to the mixture and mix well. Put it in freezer safe box and Freeze it for overnight or atleast 7-8 hours
Before serving take the ice cream out and let it sit for 5 minutes; scoop and enjoy with your favorite topping