Blend flour, salt, and sugar together in a large bowl. Cut butter into 1/2-inch cubes and add to flour mixture. Using a pastry blender or 2 knives, cut butter into dry mixture until it is the consistency of coarse meal.
Gradually sprinkle 3 tablespoons water over flour mixture, using a fork to work liquid into flour. Then work in just enough remaining water so dough can be gathered into a firm ball.
Flatten ball slightly with the palm of your hand. Wrap pastry and refrigerate at least until chilled, about 30 minutes. Pastry will keep well in the refrigerator for several days. It also freezes well.Servings: