What it means to 'Eat Like a Sardinian'

It's not uncommon for people in Sardinia to live to be 100 years old, and some have attributed their famous longevity to the foods commonly eaten on the island. Italian chef Francesco Mattana is out with a new cookbook, "Eat Like a Sardinian: Live to 100." Mattana grew up in Sardinia, but now lives most of the time in London. He came on The World to talk about his book with Host Marco Werman.