Sprinkle 5 tablespoons of ice water over mixture. With blade of rubber spatula, use folding motion to mix. Press down on dough with broad side of spatula until dough sticks together, adding up to 1 tablespoon more ice water if dough will not come together. Shape dough into two balls with your hands, one slightly larger than the other. Flatten into 4-inch-wide disks. Dust lightly with flour, wrap in plastic and refrigerate for at least 30 minutes before rolling.