This is an excellent basic recipe. You can either do a lot with it by adding more spices, or you have make "as is" and it is wonderful. I left out the sugar, and added a pinch of baking soda instead, as suggested by another reviewer. What a great tip! If you don't like a real sweet sauce, but want to tame the bitterness, baking soda does the trick. I went with one onion and one green pepper, a bit heavier on the oregano, basil and garlic to suit my family's taste. I also used ground turkey in place of ground beef and it turned out great. Couldn't tell it was ground turkey, the family didn't know. Much healthier, and easier on the budget. I often make this substitution in meat sauces when I want to go lighter.
Overall, this is an easy, versatile recipe.