My Great Grandmother brought this recipe with her from Scotland to Boston, MA in 1903. I learned how to make it from my Grandmother. To this day, we would not be caught without having this on hand during the Holidays. This recipe is not for the faint at heart. It is a labor of love. The hand kneading process can take up to 20 minutes (really) due to the ingredient ratios. The true keys to the success of this simple, rustic recipe are that the butter needs to be at room temperature (limp) and that you need to use the warmth of your hands to get the entire ball to a glistening stage. The flour needs to melt into the butter and sugar. You need to work it to the point that when cut in half, the interior of the ball glistens like the exterior. I know it sounds like a lot of work but the end results are well worth it. Put on some holiday music and share the process with people you love. Pass the ball around and take turns kneading it. Make some special Holiday memories with your family. I hope you enjoy making, eating and giving this shortbread as a small gift as much as we do... Enjoy!