When it comes to essentials, like tomato sauce, originality is overrated. Marcella Hazan's classic tomato sauce is famous and adored, and justly so. Scads of bloggers and food writers have written about it, so I'm just following along. I thought it was worth a spotlight this week, as we talk about simple, fresh, and inexpensive dinners. This is one of the best sauces I know, and it only needs four (yes, four) ingredients.