In a food processor, combine flour, salt & butter. Using short pulses, process until the mixture resembles oatmeal. Add ice water & pulse quickly until the mixture begins to come together but don’t let it actually form a ball. Transfer the mixture to a lightly floured surface & gather it into a ball with your hands. Gently flatten into a smooth disk about 1 1/2-inches thick & wrap it in plastic wrap. Refrigerate until firm enough to roll out, at least an hour.