6 ounces tomato paste
1 tbsp. olive oil
1 can tomato sauce (29 ounces)
1/2 cup finely chopped sweet onion
4 cloves garlic, minced
2 tsp. oregano
1 tsp. rosemary
1-3 tsp. dried red pepper flakes--to taste
2 cups water
salt to taste
In a large saucepan over medium heat, stir the tomato paste and olive oil together, then stir in the tomato sauce.
Add all of the remaining ingredients, bring to a boil, then lower heat to a simmer. Cook, uncovered for 3 hours, stirring frequently. Add water if sauce gets too thick, but it should reduce down to a thick paste that has enough body to cover a pizza.
Makes 3 cups, enough for 2-3 pizzas