tomato sauce

Italians believe that San Marzano tomatoes are the only tomatoes for making sauce. I'm Italian, and I've made sauce with just about any tomato I can get my hands on, but this year we grew San Marzano tomatoes for the first time. So there will be sauce. I grew up watching my mother make my grandmother's recipe for tomato sauce. It took no less than 3-5 hours. She often used canned tomatoes, one of the few canned products we bought.…