In the bowl of a food processor, combine the flour, sugar, and salt and pulse several times to combine.
Add the shortening one spoonful at a time, spreading the pieces out rather than adding one big mound.
Pulse a few times until the pieces of shortening are small (pea- to bean-sized) and covered in flour.
Add the ice water and pulse a couple more times, just until the dough starts to come together.
Transfer this mixture to a flat, lightly floured surface and begin gathering the pieces together with your hands. Form a disc shape, all while trying to handle the dough as little as possible. Note: If the dough feels overly sticky, knead in a few extra pinches of flour. If the dough feels overly dry, gently knead in extra ice water a few drops at a time, all while aiming to handle the dough as little as possible.
Form the dough into a disc and wrap it in plastic wrap. Use your hands to then smooth over any cracks in the dough.
Place disc in the fridge to chill for at least 40 minutes or up to four days. When ready to use, remove from the fridge and let sit at room temperature until the dough becomes pliable yet is still cool. If it becomes too warm, return it to the fridge for a couple minutes to become cool again.
To form a bottom crust, place the dough disc on a lightly floured surface and roll into a circle about 1⁄8 inch (0.25 cm) thick. Lightly sprinkle flour on your dough and rolling pin as needed to prevent sticking. Carefully wrap the dough circle around your rolling pin and unroll it across the top of a 9-inch (23-cm) pie plate. Press the sides and bottom to secure the dough to the pie plate. Fold the top edges under themselves and press down to secure.
From there, use according to your pie recipe's instructions .