The Best Pumpkin Pie

Name: The Best Pumpkin Pie
Prep time: 1 h
Cook time: 2 h
Total time: 3 h
Cuisine: American
Ingredients: 250 g AP; 10 g Granulated sugar; ½ teaspoon Salt; 180 g Unsalted butter (very cold); 80 g Water (very cold); 1 Egg (for egg wash); 380 g Pumpkin puree; 50 g Granulated sugar; 50 g Brown sugar; 3 Egg yolk; 8 g Corn starch; 180 g Double Cream (36% fat content); 1 tablespoon Lemon juice; 1 Cinnamon stick; 1 Orange zest (peeled, not grated); 1 Whole nutmeg; 20 g Double cream (very cold, 36% fat content); 20 g Cream cheese; 5 g Icing sugar; Few Pie Leaves using leftover pie dough