To prepare the crust:
In a food processor, pulse the cookies, salt, butter, and sugar at high speed until the crumbs are very fine.
Add the melted butter and stir until the mixture is completely moistened and smooth.
Spread this mixture over the sides and bottom of an 8-inch high-sided round pan lined with parchment paper. Bake the crust for 10 minutes at 180C.
Set aside to cool while you make the filling.
To prepare the filling:
Reduce oven temperature to 160C. In a food processor or mixer, combine the cream cheese with the sugar and salt at high speed until it is completely smooth and lump-free. Add the vanilla, scrape down the sides of the bowl with a spatula, and continue stirring for another minute.
Add the pistachio paste and pulse until the mixture is smooth and well combined. Add sour cream and stir until smooth. Add eggs one at a time and beat the mixture well.
Pour the batter into the crusted pan and place it in a 13x9-inch baking mold. Fill the mold halfway with water.
Bake for about 50 minutes: go by the appearance of the cheesecake. If it is dense and baked on the sides and ripples like thick jelly in the center, then it is ready. If a crust forms on top, it's overbaked.
Turn off the oven and stick a wooden spoon into the door to crack it open.
Let the cheesecake cool inside for 30 minutes. Then, close the oven door and leave the cheesecake for another 15 minutes.
Remove and cool for about half an hour.
Refrigerate overnight before serving.