Prepare the butter first. Cut the butter into small squares, place onto a small tray and into the freezer for at least 10 minutes, until the butter is very cold and firm. This can be done ahead of time, too.
Place the cold butter, flour and salt into a food processor and pulse for about 1 minute, until a fine, grainy mixture forms. Add the water and pulse again until a dough ball forms. For different method of preparation, please see my blog notes above.
Wrap the pie crust dough in plastic wrap and place into the refrigerator to chill. Refrigerator for at least 30 minutes; 1 hour for best results. If the dough is wrapped well, it can stand in the fridge for up to 1 week. The dough can also be rolled immediately, shaped and then refrigerated in the pan.