Sophia Loren's Pasta Sauce

6 tablespoons extra-virgin olive oil
2 tablespoons unsalted butter
2 ounces pancetta, diced very small
3 small onions, sliced or chopped
1/2 medium size fresh or dried chile pepper
1 1/2 pounds fresh tomatoes, skinned, or
    1 large can small diced tomatoes
6 to 8 large fresh basil leaves, sliced very thin
Salt to taste
Freshly grated locatello or other good parmesan cheese
1 1/4 pounds bucatini pasta or other large pasta

Heat oil and butter over medium heat and add pancetta and onions. When onions are golden, add chile pepper, tomatoes, basil and a good pinch of salt. Cook for 15 minutes so flavors are nicely combined.

While this simmers, cook the pasta and drain. Toss all together. Add cheese generously.