Preheat Oven to 400°: We are baking on the middle rack. Make sure pie crust is sitting out on counter.
Make Spice Mix: In a small bowl, add ¾ teaspoon salt, 1 & ¼ teaspoon ground cinnamon, ½ teaspoon ground ginger, ¼ teaspoon each ground cloves & ground nutmeg, ⅛ teaspoon ground black pepper. Mix it up with a fork. Make Filling: In a large mixing bowl, add pumpkin puree, dark brown sugar, eggs & egg yolk, ⅓ cup condensed milk, ½ cup heavy cream. Whisk together until combined and smooth, about 2 mins. Add spice mix to bowl & whisk to combine. Let sit in fridge while you roll out pie dough & parbake.
Roll Pie Dough: Dust work space with flour and roll out your pie dough. Use rolling pin and gently roll from the center upward a few times. Turn the dough a quarter turn. Keep doing this. After 4 turns, lightly flour any sticky butter parts. Flip the dough. Roll again from center upward and turn. Repeat process until dough is rolled out enough to fit into your pie dish.
Par Bake: Trim any rough edges and gently lay pie dough into dish crimp edges or decorate*. Pie dough does need to rest, so set it in the fridge at least 5-10 more minutes. In a small bowl whisk egg & splash heavy cream. Carefully brush over pie crust and edges. Lightly line pie dough with parchment or foil & add pie weights or substitute*. Bake crust for 10 minutes. Carefully remove from oven & carefully remove pie weights.
Bake Pie: Lower oven temp to 350°. Fill warm crust with pie filling. Add to oven on middle rack & bake for 40-50 minutes. Bake until the pie is lightly puffed up, and has a slight jiggle in the center. Remove from oven and carefully let sit on wire rack to cool. It will need at least 3 hours up to overnight to fully set. Serve with whipped cream.