Sauté the pancetta or bacon until the fat is rendered and the meat is crisp.
Take out the cooked pork and set aside.
Simmer the white wine with the pork fat until reduced.
Add sliced tomatoes to the pan (also peeled if you are using fresh ones).
Season with salt and simmer until it thickens (if it is too dry, add a little extra virgin olive oil and reduce the heat to low).
In the meantime, cook the pasta al dente in plenty of salted water, roughly 6 quarts for 1lb of pasta.
Drain and pour it into a serving bowl; add the sauce, the crispy pancetta, and the Pecorino.
Toss evenly and add some red pepper flakes according to your taste.
Eat all the amatriciana as this does not reheat well.