Pistachio Gelato

We've experimented with several Pistachio gelato recipes now.  This is the best version we have so far!  Picture comes from here.

INGREDIENTS:

2. 1/4 cup salted shelled pistachios (about 3 3/4 ounces)
3. 1/2 cup sugar
4. 2 cups whole milk
5. 5 large egg yolks
6. Chopped salted pistachios

PREPARATION: Finely grind 1/4 cup pistachios and 1/4 cup sugar in processor. Combine pistachio mixture and milk  in heavy medium saucepan. Bring to boil. Whisk yolks and 1/4 cup sugar in large bowl to blend. Gradually whisk milk mixture into yolk mixture. Return mixture to saucepan. Stir over medium-low heat until custard thickens slightly and leaves path on back of spoon when finger is drawn across, about 8 minutes (do not boil). Remove from heat.  Refrigerate custard until cold, about 3 hours. 

Process custard in ice cream maker according to manufacturer's instructions. Transfer to covered container and freeze. (Can be prepared 1 week ahead. Keep frozen.) Scoop into glasses or bowls. Garnish with chopped pistachios.