In a medium bowl, whisk together the flour, fine sea salt, and granulated sugar. Cut in the cold butter with a pastry cutter or your fingers until the mixture resembles coarse crumbs with pea-sized bits of butter. Sprinkle in the ice water, 1 tablespoon at a time, tossing with a fork just until the dough comes together when pressed. Shape into a disk, wrap in plastic, and chill for at least 30 minutes.
1 1/4 cups all-purpose flour, 1/2 teaspoon fine sea salt, 1 tablespoon granulated sugar, 1/2 cup unsalted butter, 3–4 tablespoons ice water
Roll the chilled dough into a 12-inch circle and fit it into a 9-inch pie plate. Crimp the edges. Line with parchment and fill with pie weights or dried beans. Bake at 400°F (200°C) for 15 minutes, remove the weights and parchment, then bake 8–10 minutes more until golden. Let the crust cool completely.
Place the chopped bittersweet or semisweet chocolate in a heatproof bowl. Microwave in 20–30 second bursts, stirring between each, until smooth and glossy, or melt over a pot of barely simmering water. Set aside to cool until slightly warm and pourable, not hot.
4 ounces bittersweet or semisweet chocolate
In a stand mixer fitted with the paddle attachment (or in a large bowl with a hand mixer), beat the softened butter and granulated sugar on medium-high speed for 6–7 minutes until very light and fluffy. Add the powdered sugar, vanilla, and salt, and beat for 1–2 minutes more until smooth.
3/4 cup granulated sugar, 3/4 cup unsalted butter, 2 ounces powdered sugar, 2 teaspoons pure vanilla extract, 1/4 teaspoon fine sea salt
With the mixer on low speed, slowly pour in the cooled melted chocolate. Scrape down the sides and bottom of the bowl, then beat on medium speed for about 2 minutes until fully combined and glossy.
4 ounces bittersweet or semisweet chocolate
Add 1 pasteurized egg and beat on medium-high speed for 5 minutes. Add the second egg and beat another 5 minutes. Add the third egg and beat 5 more minutes, scraping the bowl as needed. The filling should look thick, satiny, and lighter in color.
3 large pasteurized eggs
Scrape the chocolate silk filling into the completely cooled pie crust. Smooth the top with a spatula, creating soft swirls if desired.
Cover the pie loosely with plastic wrap and chill in the refrigerator for at least 4 hours, or overnight, until the filling is set and slices cleanly.
Just before serving, or up to a few hours ahead, beat the cold heavy whipping cream, powdered sugar, and vanilla on medium-high speed until soft to medium peaks form.
1 1/2 cups heavy whipping cream, 3 tablespoons powdered sugar, 1 teaspoon pure vanilla extract
Spread or pipe the whipped cream over the chilled pie. Garnish with chocolate curls, shaved chocolate, cocoa powder, or chocolate chips if desired. Slice with a sharp, thin knife, wiping between cuts for clean slices.
chocolate curls or shavings, cocoa powder, dark chocolate chips or mini chocolate pieces