Well, almost every day... Fall is definitely the official pie season, often going into winter. But March 14 is National Pi Day, when we get to celebrate mathematics AND pie! This interesting holiday came about to acknowledge not only renowned physicist Albert Einstein's birthday, but also to tip a hat to the mathematical sign pi. The History Channel's site gives the best rundown of how it came to be, but suffice to say this pastry chef loves the fact that eating pie has come