The twists and turns of Fettuccine Alfredo's history

In Rome, two restaurants vie for supremacy in preparing Fettuccine Alfredo – egg pasta with butter and parmesan cheese – a dish that has entranced Hollywood and Washington royalty since the earliest days of La Dolce Vita. Chris Livesay visits Alfredo alla Scrofa and Il Vero Alfredo, where rival families prepare one of the most popular Italian recipes.