Roll the dough out on a lightly floured surface to create a circle. Carefully transfer to a 9-inch pie plate, then tuck the excess dough underneath the edges of pie dough. Flute the edges with two fingers or crimp with the tines of a fork. Refrigerate until ready to fill.
Preheat an oven. Place unsalted butter and chopped chocolate in a microwave safe bowl. Melt in a microwave, stirring between intervals, until completely smooth. Set aside to cool slightly.
In a separate bowl, whisk together sugar, eggs, evaporated milk, white vinegar, vanilla extract, espresso powder, and Kosher salt.
Add the melted chocolate and butter mixture, then stir until fully incorporated.
Pour the filling into the prepared pie crust, then bake on the lowest rack in your oven. Reduce the temperature without opening the oven, then continue baking for an additional 50-55 minutes, or until the filling has completely set.
Transfer to a wire rack, then allow to cool before slicing. Top with homemade whipped cream. Can be enjoyed cold, room temperature, or warm, but unless you want a soft filling, don’t skip the wait time.
Place heavy cream in the bowl of a stand mixer fitted with whisk attachment. With the mixer running on medium speed, add confectioner’s sugar and vanilla extract. Continue whisking until soft peaks form. Whipped cream should be used immediately or transferred to a storage container.
It is creamy, rich, and loved by pretty much everyone!