Mo Rocca's 'My Grandmother's Ravioli' Returns For Second Season

Mo Rocca is well known as an NPR personality with his appearances on "Wait, Wait, Don't Tell Me," and a correspondent for "CBS Sunday Morning."

What you might not know is that Rocca is an avid fan of a particular kind of cooking.

On his Cooking Channel program, "My Grandmother's Ravioli," Rocca gets to explore a subject near and dear to his heart: learning family recipes from grandmothers and grandfathers.

The show begins its second season tonight. Rocca tells Here & Now that, because of the show, he has now adopted grandparents from around the country, from all different cultures.

What unites them all?

"The biggest area of common ground among grandparents all over the world is the refusal to measure," Rocca said.