This is one of those sauces that you must try. Once you do, I assure you that you will make it one of your family’s standard recipes. It is quick, simple, and nutritionally sound, and this sauce is at the base of many other recipes. You can double or triple this recipe for big dinners, or you can freeze it and use it in future meals. It keeps in the freezer for a month or two. Make this sauce with fresh tomatoes only when the juiciest, most flavorful ripe tomatoes are available. (Increase the amount of olive oil a little if you make the sauce with fresh tomatoes.) Otherwise, canned plum tomatoes make a delicious marinara sauce.