Sift flour, salt and sugar into a large bowl, add butter and cut into the flour (using a pastry blender or even your clean fingers) until mixture resembles coarse crumbs (the size of peas).
Sprinkle with the water (one tablespoon at a time) just until dough starts to come together. Then move to a lightly floured flat surface and knead lightly into a round ball.
Wrap dough in plastic and refrigerate for at least 30 minutes before using.
Notes
Prick the crust well with a fork, then cover with parchment paper, add the dried beans or pie weights on top. Bake for approximately 20 minute in a pre-heated 350F (180C) oven, remove the paper and weights and bake for another 5 or 10 minutes. If pre-baking for a fruit filling then bake for only 5-6 minutes. Remove from the oven, remove paper and beans, let cool if using for a no bake dessert, if not add the filling and continue baking.If using the crust for a baked pie then follow the directions in the recipe.