To make the crust
1-In a large bowl whisk together flour,: In a large bowl whisk together flour, sugar and salt.
2-Add butter and mix with a fork: Add butter and mix with a fork until it starts to look like a coarse meal.
3-Add 1 tablespoon of water at the: Add 1 tablespoon of water at the time and continue mixing until a dough forms.
4-Wrap the dough with the plastic wrap: Wrap the dough with the plastic wrap and refrigerate for 2 hours.
5-Lightly greased 9-inch pie plate and preheat: Lightly greased 9-inch pie plate and preheat oven to 350 F.
6-Take the dough from refrigerator and roll: Take the dough from refrigerator and roll out on a lightly floured work surface into a circle about 1/8 inch thick.
7-Transfer the dough to a pie plate: Transfer the dough to a pie plate and trim excess of a dough from edges.

To make the filling
8-In a bowl whisk together sugar, cocoa: In a bowl whisk together sugar, cocoa powder, flour, and salt.
9-Combine in a sauce pan half and: Combine in a sauce pan half and half, butter, and chocolate and stir over a medium-low heat until it become smooth. Let it cool a few minutes before you add it over dry ingredients and eggs.
10-Add eggs, egg yolks and chocolate mixture: Add eggs, egg yolks and chocolate mixture into dry ingredients and stir until well-combined
11-Transfer filling to pie crust in pan: Transfer filling to pie crust in pan.
12-Bake 45 to 50 minutes (until the: Bake 45 to 50 minutes (until the center is set and the edges start to crack)
13-Cool 10-15 minutes before serving: Cool 10-15 minutes before serving.