Pistachio Cheesecake Recipe

Ingredients:
For the pistachio paste:
400 gram peeled roasted Pistachios
For the crust:
1/3 cup (45g) Pistachios
160g Graham crackers/biscuits
6 tablespoons (90g) Malted butter
For the filling:
4 cups (900g) Cream cheese
1 cup (200g) Sugar
3/4 cup (180g) Pistachio paste
4 Eggs
1 teaspoon Vanilla extract
1/4 cup (60ml) Heavy cream
1/2 cup (115g) Sour cream
1½ tablespoons Cornstarch
For the topping:
3 tablespoons (45g) Pistachio paste
120g White chocolate
1/4 cup (60ml) Heavy cream
For decoration:
Finely ground pistachios