Mix the flour with the sugar and the salt. Dice your cold butter, add it to the flour.
Using your hand, break up the butter into small pea-sized pieces or flakes.
Add 7 tablespoon of ice cold water and stir it in with a wooden spoon or spurtle. Once the dough starts to clump together, use your hands to knead it into a ball. Stop kneading as soon as it forms a smooth dough.
Flatten the ball and wrap with plastic wrap. Refrigerate for at least 1 hour or overnight.
Roll out the pie dough and use as directed in your recipe.