Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   2      tablespoons   olive oil
   3      cloves        garlic -- minced
   1                    onion -- minced
     1/4  pound         prosciutto *
  70      ounces        italian plum tomatoes
   1      cup           loosely packed fresh basil -- leaves, chopped
     3/4  cup           loosely packed italian -- flat-leaf parsley
   1      cup           dry white wine
     1/4  teaspoon      dried red pepper flakes
                        salt and freshly ground -- black pepper, to
                        taste
   2      tablespoons   butter

Preparation:

* thinly sliced and cut into strips 1. Warm the oil in a nonreactive large pot over medium heat. Add the garlic and onion and cook until the onion is translucent, 5 minutes. Add the prosciutto and cook for 5 minutes. Add the juice from the tomatoes. Using your hands or a fork, break up the whole tomatoes and add to the pot. Simmer, uncovered, for 30 minutes. 2. Stir in the basil, parsley, wine and pepper flakes, season with salt and pepper to taste, and simmer for 1 hour. 3. Remove the sauce from the heat. Whisk in the butter until melted. Makes 3 1/2 cups.