In a small bowl, whisk water and creme fraiche (OR sour cream together). Place in the refrigerator to chill while you prepare the rest of the ingredients
In a large bowl, with a whisk, mix the all purpose flour, salt, and sugar
Slice butter into small cubes, about 1 tablespoon in size
Add butter to large bowl with the dry ingredients. Toss the butter around the bowl to coat in the flour. Each piece should be coated!
Squish the butter into flat pieces, in between your thumb and pointer finger-piece by piece. You want the pieces to be flat and the size of a quarter, some of these pieces may be larger when flattened, that is okay, as you work the dough they will break
Toss the butter pieces again in the flour gently until each piece is flat and the size of a quarter
Next, add HALF of the water and creme fraiche mixture (OR sour cream mixture depending on which you used) to the flour/butter mixture.
Toss the ingredients around the bowl incorporating the liquid. Add in other half of the liquid and toss again to incorporate. Then squish the dough together with your hands. It will be VERY dry but try to compress it as best you can. Flip the bowl onto a clean work surface and continue to squish it together. Once you have a round shape formed, cut that dough ball in half and stack one half on top of the other. Repeat this process two more times. Adding flour if you need to prevent sticking, use a rolling pin to help bring the shape and form together, passing over the dough a few times as you fold it on to itself until it feels like it can hold a shape. Attempt to press the dough together and wrap the dough in plastic wrap. Set dough in fridge for at least an hour and a half before use.
When ready to use, remove the dough from the fridge and cut it in half. One half will be the bottom crust and the other will be the top. On a heavily floured surface roll out dough to about 1/8 of an inch thick. Press into prepared deep dish pie pan.