In heavy pot, heat the oil. Then add the fatback (if using) and garlic and saute until golden brown. Remove the fatback, then add the onions and saute until soft, 2 to 3 minutes.
Add the tomatoes (crush by hand into the pot). Bring to a boil, add salt to taste, reduce to a simmer and cook for 10 to 15 minutes. Add salt, pepper and oregano to taste. After finished, turn off the heat and add the basil.
This recipe was provided by a chef, restaurant or culinary professional. It has not been tested for home use.