This is a Calabrese sauce and it is so simple to make a delicious tomato sauce, far superior to any store bought sauce. By adding garlic, or meat to this sauce it takes on such dimension so it's very versatile. The secret is the time it takes to cook. whether you use canned tomato puree or diced tomatoes. DO NOT OVERCOOK IT!! Once the sauce is brought up to temperature (boiling point,) reduce heat to medium low and cover. Cook for approximately 15-30 minutes. Of course, if there is meat in the sauce you will have to cook longer. But the longer you cook a sauce, it looses it's fresh taste and just goes blah unless you really spice it up and give it new kick. Just think! You can cook fresh homemade sauce with your choice of pasta in about, 20 minutes!