Chocolate Pie

1. Stage

In a large bowl, whisk flour, cocoa powder, powdered sugar, and salt. Using your fingers or a pastry blender, work butter into dry ingredients until small, pea-size pieces form.

2. Stage

Add water, 1 tablespoon at a time, until dough starts to come together and is moist but not wet and sticky (test by squeezing some with your fingers). If dough isn’t coming together, add 1 tablespoon more water.

3. Stage

Turn out dough onto a lightly floured surface. Roll to a disk about 1" thick. Wrap with plastic wrap and refrigerate at least 1 hour or up to 3 days.

4. Stage

On floured surface, roll dough to a 12" circle, then unfurl into a 9" pie plate. Press dough into bottom and up sides of dish. Trim excess dough, then crimp edges. Refrigerate until cold, about 25 minutes.

5. Stage

Preheat oven to 400º. Place parchment over dough, then add pie weights or dried beans.

6. Stage

Bake crust until set and slightly darker in color, about 15 minutes. Remove pie weights and let cool.

7. Stage

Preheat oven to 325º. In a large pot over medium-high heat, combine milk and 2 1/4 cups cream. Bring to a boil, then remove from heat. Whisk in semisweet and unsweetened chocolates until melted and smooth.

8. Stage

In a large bowl, mix egg yolks, granulated sugar, and salt. Temper yolks by adding a few ladles of chocolate mixture into yolk mixture and whisking to combine. Continue to gradually add chocolate mixture until combined.

9. Stage

Strain chocolate mixture through a fine-mesh sieve into a large measuring cup or bowl. Pour custard into crust.

10. Stage

Bake pie until custard is mostly set with a bit of a jiggle in the center (some slight cracking is fine), 35 to 40 minutes. Let cool to room temperature, then refrigerate at least 1 hour or up to overnight.

11. Stage

Right before serving, in the large bowl of a stand mixer fitted with the whisk attachment (or in a large bowl using an electric mixer), on medium-high speed, beat powdered sugar and remaining 1 cup cream until stiff peaks form. Fold in sour cream.

12. Stage

Top cooled pie with whipped cream and chocolate shavings.