Cut butter into ½ inch cubes and then chill. Butter must be very cold before using. Place flour, sugar and salt in food processor. Pulse several times to combine ingredients. Add butter and toss to coat with flour. Pulse mixture in short bursts until flour resembles small peas. With the food processor running, add the ice water and run until dough forms a rough looking mass. Turn dough onto work space and press together. Cover with plastic wrap and place in refrigerator to set up. Once set, divide into 4oz portions.