Ice water: this recipe doesn't use liquid, and though it might seem like the dough will never come together into a ball, it does. But, if you make it by hand, it might be harder to form into a ball as the butter distributes differently than when using the food processor. You can add ice water by teaspoons at a time (put some ice cubes in a glass, cover it with water, and use the cold water) to help everything bind together. Don't add too much that you end up with wet dough.Cookie cutters: use...