 Today we're traveling across Italy to find the best recipes and the best stories. Matt Goulding infiltrates the secret society that reigns over Neapolitan pizza. One of their bylaws is something like there may be no variance greater than 0.25 centimeters from crust to the center of the pizza. Plus Leah Koenig guides us through Rome's Jewish cuisine from artichokes as crisp as potato chips to the Shabbat dinner that made her stop being a vegetarian.