NYT Cooking: According to local legend in Emilia-Romagna, Italy, the birthplace of tortellini, the pasta's navel shape was inspired by the indescribable beauty of Venus's belly button. Keep that in mind as your roll, stuff and fold these little dumplings, whose recipe is adapted from the "true and authentic" version codified by the Confraternita del Tortellino and notarized by the Bologna ...